MI18-18A

MAINTENANCE
INFORMATION
DATE :
SUBJECT :
Revision: A
MI18-18A
June 2018
SECTION : 18 BODY
GENERAL HOISTING AND TOWING PROCEDURES
Updated Figure 1
2018-07-04
APPLICATION
All Prevost vehicles models
Model Year : 2014 - Current
DESCRIPTION
This maintenance information is for towing and hoisting Prevost vehicles.
Tower experience, local rules and regulations apply in conjunction with the procedures outlined in this
document.
Images are for representation purpose only, actual vehicles may differ.
Table of contents
1.
HOISTING AND TOWING POINTS ................................................................................................................... 2
1.1
1.2
1.3
1.4
2.
JACK STANDS................................................................................................................................................. 3
AXLE HOISTING POINTS................................................................................................................................. 4
USING WHEELS AS LIFTING POINTS ............................................................................................................... 6
OPTIONAL CHASSIS HOISTING POINTS .......................................................................................................... 7
TOWING......................................................................................................................................................... 9
2.1
PREPARATION BEFORE TOWING................................................................................................................... 9
2.1.1 Engine compartment emergency air-fill valve........................................................................................ 10
2.1.2 X Series optional front air supply connections........................................................................................ 10
2.1.3 Drive Axle Flange Shaft Removal ............................................................................................................ 11
2.1.4 After Towing ........................................................................................................................................... 13
2.2
TOWING FROM THE FRONT ........................................................................................................................ 13
2.2.1 First Lift................................................................................................................................................... 14
2.2.2 Second Lift- Front Tow Eye Pads as Lifting Point for Towing .................................................................. 15
2.2.3 Second Lift- Using I-Beam Front Axle as Lifting Point for Towing .......................................................... 18
2.3
X-SERIES RECOVERY USING OPTIONAL REAR TOW EYES ............................................................................. 22
3.
EMERGENCY TOWING ...................................................................................................................................23
3.1
REAR TOW USING NON-APPROVED LIFTING POINTS - EMERGENCY ONLY ................................................. 23
3.1.1 PRECAUTIONS ......................................................................................................................................... 23
3.1.2 FIRST LIFT................................................................................................................................................ 24
3.1.3 SECOND LIFT ........................................................................................................................................... 25
3.2
VOLVO I-SHIFT TRANSMISSION TOWING MODE ......................................................................................... 29
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1. HOISTING AND TOWING POINTS
As much as possible, use the wheels as the preferred lifting points. If lifting by the wheels is not possible
or appropriate, there are several hoisting and towing points under the vehicle.
Lifting should be performed without passengers and no luggage remaining in the vehicle.
Use these points exclusively for hoisting and towing operations (Figure 1, Figure 2).
FIGURE 1 FRONT HOISTING AND LIFTING POINTS DIAGRAM
FIGURE 2 REAR HOISTING AND LIFTING POINTS DIAGRAM
The vehicle is provided with four standard chassis hoisting points. When axles or wheels are serviced, use
the chassis hoisting points.
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When using the chassis hoisting points to support the vehicle, the tag axle must be unloaded at all
times. To prevent damage to the suspension, always support the drive and front axles using jack
stands when using chassis hoisting points.
CHASSIS HOISTING POINTS
2 hoisting points located aft of the tag axle (Figure3)
2 hoisting points or optional hoisting pads with receptacles located aft of the front axle (Figure4)
FIGURE 3 : CHASSIS HOISTING POINTS
- AFT OF TAG AXLE (BOTH SIDES)
1.1
FIGURE 4 : JACK STAND AT CHASSIS HOISTING
POINT - AFT OF FRONT AXLE (BOTH SIDES)
JACK STANDS
As a general recommendation, the minimum safe working load (SWL) for any jack stand should be
10 US tons (20 000 lb; 9072 kg). Figure5, Figure6 and Figure7 show general examples of this type of jack
stand.
The vehicle can be supported at the chassis hoisting points (refer to HOISTING AND LIFTING POINTS
diagram). Use a jack stand of 10 US tons (20 000 lb; 9072 kg) capacity at each of the four standard
chassis hoisting points.
WARNING
Hydraulic jacks are intended for lifting only. Do not get under the vehicle while using hydraulic jacks
unless it is properly supported with safety jack stands.
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FIGURE 5 : 20 000 LB (10 US TON)
CAPACITY JACK STAND
1.2
FIGURE 6 : 16500 LBF
CAPACITY
FIGURE 7 : 40 000 LB (20 US TON) CAPACITY
JACK STAND
AXLE HOISTING POINTS
AXLE HOISTING POINTS
2 front axle hoisting points (Figure8, Figure9, Figure10)
2 drive axle sub frame hoisting points (Figure11)
2 hoisting points under the tag axle (tag axle must be unloaded) (Figure12)
To ensure stability, always use the two hoisting points under a specific axle simultaneously.
WARNING
Two hoisting points are located under the tag axle. Using the tag axle as rear hoisting points for the
vehicle should be avoided. When possible, use the drive axle as hoisting point.
The vehicle can be lifted from the front axle and the drive axle sub frame using lifting equipment of
appropriate capacity.
APPROXIMATE WEIGHT PER AXLE
COACHES
Front axle: 12,000 lb. (5 443 kg)
Drive axle: 26,500 lb. (12 020 kg)
MOTORHOMES / SPECIALTY VEHICLES
Contact the owner of the vehicle. The Gross Axle
Weight Rating (GAWR) for the front and rear axle
should not be exceeded.
GAWR values for a particular vehicle appear on
the vehicle’s certification plate installed on the
driver’s left-hand console.
WARNING
The suspension must be in the normal ride position before hoisting.
WARNING
To prevent damage to suspension components, always unload the tag axle before hoisting the vehicle.
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FRONT AXLE HOISTING POINTS
FIGURE 8 : I-BEAM AXLE HOISTING POINT - CURBSIDE
FIGURE 9 : I-BEAM AXLE HOISTING POINT – ROAD SIDE
FIGURE 10 : INDEPENDENT FRONT SUSPENSION (IFS) HOISTING POINTS.
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DRIVE AXLE SUB FRAME HOISTING POINTS
FIGURE 11 : DRIVE AXLE SUB FRAME HOISTING POINTS.
TAG AXLE HOISTING POINTS
FIGURE 12 : TAG AXLE HOISTING POINTS (USE ONLY TO SUPPORT THE TAG AXLE)
1.3
USING WHEELS AS LIFTING POINTS
Use the front and drive axle wheels to lift the vehicle when using mobile column lifts. When doing so, the
tag axle must be unloaded at all time.
Avoid using the tag axle wheels as the only lifting point for the rear of the vehicle. However, if the rear of
the vehicle has to be lifted using the tag axle wheels, the tag axle must be unloaded at all times.
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1.4
X-SERIES COMMUTER OPTIONAL CHASSIS HOISTING POINTS
On certain vehicles, lifting pads and rear emergency recovery toe eyes may be added on the chassis.
When axles or wheels are serviced, use the chassis hoisting points.
FIGURE 13 : OPTIONAL FRONT CHASSIS HOISTING POINTS
FIGURE 14 : X-SERIES OPTIONAL REAR CHASSIS HOISTING POINTS
When using the chassis hoisting points to support the vehicle, the tag axle must be unloaded at all times.
To prevent damage to the suspension, always support the drive and front axles using jack stands when
using chassis hoisting points.
X-SERIES OPTIONAL CHASSIS HOISTING POINTS
2 optional hoisting pads with receptacles located aft of the front axle (Figure16)
2 optional hoisting pads with receptacles located aft of the tag axle (Figure15)
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FIGURE 15 : OPTIONAL CHASSIS HOISTING
RECEPTACLES - AFT OF TAG AXLE
FIGURE 16 : OPTIONAL CHASSIS HOISTING
RECEPTACLES - AFT OF FRONT AXLE
FIGURE 17 : JACK STAND AT CHASSIS HOISTING
RECEPTACLE - AFT OF FRONT AXLE, ROAD SIDE
FIGURE 18 : JACK STAND AT CHASSIS HOISTING
RECEPTACLE - AFT OF FRONT AXLE, CURB SIDE
FIGURE 19 : JACK STAND AT CHASSIS HOISTING
RECEPTACLE – AFT OF TAG AXLE, ROAD SIDE
FIGURE 20 : JACK STAND AT CHASSIS HOISTING
RECEPTACLE – AFT OF TAG AXLE, CURB SIDE
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2.
TOWING
Towing from the front is the recommended method. Prevost does not recommend towing from the rear
using unapproved hoisting points as the vehicle may sustain structural damage.
Observe normal precautions including, but not limited to list below:
• Make sure the parking brake or the emergency brake is released at time of towing.
• Do not allow passengers to ride on board.
• Tow the vehicle at a safe speed.
• Accelerate and decelerate slowly and cautiously.
• Avoid sharp turns where possible.
WARNING
Do not carry passengers while the vehicle is being towed.
CAUTION
Avoid towing the vehicle from the rear using hoisting points that are not approved as this will cause
structural damage. In case of damage to the drive train components use a low-bed semi-trailer.
WARNING
Engage the parking brake to prevent the vehicle from moving before you begin maintenance or service
procedures that require you to be under the vehicle. Serious personal injury can result.
CAUTION
Lift the vehicle at the minimal height required for the vehicle to trail the tow truck.
PREPARATION BEFORE TOWING
2.1
WARNING
Prior to hoisting, park the vehicle on a level
surface and apply parking brake.
Chock the wheels to prevent the vehicle from
moving at time of releasing the parking brake
during the towing preparation.
On the L.H. dashboard panel, turn on the hazard
warning flashers. Preferably, use a towing light
bar.
FIGURE 21
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Place the front wheels in a straight-ahead position
and keep the steering wheel from turning. To do
so, slide the driver’s seat close to the steering
wheel. Wrap the safety belt around and through
the steering wheel and then fasten safety belts.
This will ensure the vehicle rolls in straight
direction to be stopped by the tow truck in case of
mechanical failure of the lifting equipment.
FIGURE 22
2.1.1
Engine compartment emergency air-fill valve
Use the emergency fill valve to supply air to the
system when the engine cannot be operated. This
valve is located in the engine compartment
(Figure23) and supplies air for all systems
(brakes, suspension and accessories).
FIGURE 23 : ENGINE COMPARTMENT EMERGENCY AIRFILL VALVE
CAUTION
Do not tow the vehicle without external air pressure applied to the emergency fill valve if the engine
does not operate. Without brake system air pressure, the emergency spring brakes may apply
automatically. If failure prevents releasing the parking brakes with air pressure, disengage the parking
brakes mechanically.
2.1.2
X Series Optional Front Air Supply Connections
Operate the engine when towing to maintain brake system air pressure. If the engine cannot be operated,
connect external air pressure lines from the tow truck.
“Brake” quick connect fitting
Flip down the access door located on the front bumper, connect an auxiliary air supply from the tow truck
to the quick connect fitting identified BRAKE in order to supply air for operation of the vehicle service
brake from the tow truck (Figure24, Figure25).
“Air supply” quick connect fitting
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While the vehicle is being towed, connect an auxiliary air supply from the tow truck to the quick connect
fitting identified AIR SUPPLY to supply air for all systems (brakes, suspension, accessories) through the
air dryer (Figure24, Figure25).
FIGURE 25 : FRONT TOWING AIR SUPPLY
ACCESS PANEL QUICK CONNECT FITTINGS
FIGURE 24
2.1.3
Drive Axle Flange Shaft Removal
1. Apply the parking brake.
2. Remove the stud nuts and the washers (with
Meritor drive axle) or cap screws (with ZF drive
axle) from the flange shaft.
NOTE: there is oil behind the flange shaft
which comes out during disassembly
FIGURE 26 : ZF A-132 AXLE
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FIGURE 27: MERITOR RC23-165 AXLE
CAUTION
Do not use a chisel or wedge to loosen the axle flange shaft and tapered dowels. Using a chisel or
edge can result in damage to the axle shaft, the gasket and seal, and/or the axle hub.
3. Meritor axle: Loosen the tapered dowels in the
flange of the axle shaft using the following
methods.
a) Do not strike the round driving lugs on the
flange of an axle shaft. Pieces can break off
and cause serious personal injury. A 1.5-inch
(38.1 mm) diameter brass hammer can be
used as a drift.
b) Hold a 1.5-inch (38.1 mm) diameter brass drift
against the center of the axle shaft flange,
inside the round driving lugs.
c) Hit the end of the drift with a large hammer (5
to 6 lbs.’) to loosen the axle shaft and tapered
dowels from the hub.
4. Identify each axle shaft that is removed from the
axle assembly so they can be installed in the same
location after transporting or repair is completed.
(Example: Match mark a mating axle shaft and
hub).
FIGURE 28: MERITOR RC23-165 AXLE
5. Remove the tapered dowels (if used), gasket or O-ring and the axle shaft from the axle assembly.
Use a container to recover the oil.
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6. Remove opposite flange shaft similarly.
7. Install a temporary cover over the open end of each hub where an axle shaft was removed. This will
prevent dirt from entering the bearing cavity and loss of lubricant.
2.1.4
After Towing
1. Remove the covers from the hubs.
2. Install the gasket or O-ring, and axle shaft into the axle housing and carrier in the same location it was
removed from. The gasket and flange of the axle shaft must be flat against the hub. Rotate the axle
shaft and/or the driveline as necessary to align the splines and the holes in the flange with the studs
or holes in the hub.
3. Meritor axle only: Install the dowels over each stud and into the tapered holes of the flange.
4. Install the washers and stud nuts or cap screws.
MERITOR RC23-165 AXLE
ZF A-132 AXLE
Determine the size of the fasteners and tighten the nuts to the
corresponding torque value shown below.
Tightening torque M18x1.5 G10.9 screw
•
9/16-18 plain nuts: 110 - 165 lbf-ft (149-224 Nm)
•
5/8-18 plain nuts: 150 - 230 lbf-ft (203-312 Nm)
325 lbf-ft (440 Nm)
5. Mount opposite flange shaft similarly.
6. Inspect the lubricant level in the axles and hubs where the axle shafts were removed. Add the correct
type and amount of lubricant if necessary.
CAUTION
Make sure axle shafts or driveshaft are installed correctly after towing. Tighten axle shaft and driveshaft
nuts to the correct torque settings. Do not invert shafts.
2.2
TOWING FROM THE FRONT
The towed vehicle must be lifted from the front with front wheels off the ground. The tow truck must be
equipped with the proper lifting equipment i.e. tow bar, axle forks and holders to reach under the front
axle or the front tow eye pads. No other lifting points are recommended for towing.
Lifting and towing from any other point is not authorized as it may cause structural damage. To prevent
overloading the drive axle, do not unload or raise the tag axle when towing the vehicle.
To prevent damage to the vehicle, use the front tow eye pads fixed to the vehicle chassis between the
front axle and the front bumper. Only use a solid link tow bar and safety chains to tow the vehicle.
1. Block the wheels to prevent the vehicle from moving.
2. Perform the PREPARATION BEFORE TOWING. Refer to paragraph 2.1.
3. Disconnect both drive axle shafts to prevent damage to the transmission. Plug axle tubes to prevent
oil loss. Refer to 2.1.3
DRIVE AXLE FLANGE SHAFT REMOVAL.
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CAUTION
The axle shafts must be disconnected to avoid serious damage to the Allison transmission. Lubrication
is inadequate when towing.
To prevent damage to the drive train components, disconnect drive axle shafts before towing. Do not
attempt to push or pull start a vehicle equipped with an automatic transmission.
Failure to disconnect the propeller shaft, remove the drive axle shafts or lift the drive wheels off
the ground before towing can cause serious transmission damage and void the warranty.
2.2.1
First Lift
To allow lifting equipment fitted with axle forks to reach under the front axle or tow eyes, it is necessary
to perform a first lift of the front of the vehicle using the tow eye pads as lifting points. This first lift will
allow tow cans or blocks to be placed underneath front tires.
1. Retract the tow truck stinger arm.
2. On the first lift, position the tow bar fork
holders under the front tow eye pads
(Figure 30 and Figure 31) to lift the
vehicle in order to place the front
wheels firmly on the tow cans or blocks.
Center to center measurement between tow
eyes= 37 inches (Figure 29)
Note: No axle forks are needed for this
first lift
FIGURE 29
FIGURE 30
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FIGURE 31: TOW EYE
3. Deploy the tow truck stinger arm,
placing the axle fork holders under the
tow eye pads (Figure 32).
FIGURE 32
4. Lift the front end of the vehicle high
enough to allow installation of tow cans
or blocks. Place the tow cans or blocks
perfectly centered underneath each
front wheel (Figure 33).
5. With precaution, lower the front of the
vehicle
FIGURE 33
2.2.2
Second Lift- Front Tow Eye Pads as Lifting Point for Towing
The tow eye pads are fixed to the vehicle chassis, fore of the front axle will be used as front end lifting
points for towing.
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1. Perform the first lift as instructed in
paragraph 2.2.1 if not already done.
2. Place the axle forks on the tow bar
fork holders (Figure 34).
Use 3" to 4 ½" mouth axle forks
preferably
FIGURE 34
REGULAR
Pre-adjust spacing between axle forks
to = 37 inches
3. Lower the tow bar and position under
the front tow eye pads.
4. Adjust fork holder’s position and hand
guide the forks into each front tow
eye. (Figure 35)
5. Lift the tow bar until the axle forks fit
snugly into the front tow eyes
(Figure 35).
FIGURE 35
6. Raise the front of the vehicle.
7. Install a jack stand under the stinger
arm for support and safety purposes
and then lower the stinger arm so it
rests on the jack stand (Figure 36).
The tow cans or blocks can be
removed from under the front axle
wheels.
FIGURE 36
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8. Tie the two choke chains together to
secure the tow eyes to the tow bar
attachment (Figure 38).
FIGURE 37
9. Attach the two tow truck safety
chains from each of the two front
lower radius rods (Figure 38) of the
vehicle to the truck’s tow eyes
(Figure 38).
10. Confirm air is supplied to the vehicle.
See 2.1 PREPARATION BEFORE
TOWING
FIGURE 38
FIGURE 39
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11. Raise the stinger arm and remove
the support jack stand.
12. Lower the vehicle. The front tires
should be 7″ to 8″ above the ground
before the tow can proceed.
13. Use bungee cords to support the
safety chains (Figure 40).
FIGURE 40
14. If required, use the appropriate jig to
assure that the highest point on the
vehicle does not exceed the maximum
allowable height for towing (Figure 41).
15. Make sure the parking brake is
released before moving the vehicle.
16. Observe
towing.
safety
precautions
when
FIGURE 41
Avoid sharp turns where possible as
safety chains may rub and damage the
front bumper (Figure 42)
FIGURE 42
2.2.3
Second Lift- Using I-Beam Front Axle as Lifting Point for Towing
This method uses the I-beam axle as lifting points for towing (Figure8 and Figure9).
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1. Perform the first lift as instructed in
paragraph 2.2.1 if not already done.
2. Install regular axle forks onto tow bar
fork holders.
TALL
FIGURE 43
REGULAR
Pre-adjust spacing between
forks
Minimum spacing: 25 inches
Maximum spacing: 33 inches
axle
3. Lower the stinger arm to position the
axle forks under the front axle hoisting
points (Figure8 and Figure9).
4. Lift the tow bar until the axle forks grab
the front axle I-beam at the hoisting
points (Figure 44).
5. Raise the front of the vehicle.
FIGURE 44
FIGURE 45
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6. Install a jack stand under the stinger
arm for support and safety purposes
and then lower the stinger arm so it
rests on the jack stand (Figure 47). The
tow cans or blocks can be removed
from under the front axle wheels.
7. Tie the two choke chains together to
secure the front axle to the tow bar.
Take up any slack that may remain and
maintain proper tension on chains.
FIGURE 46
8. Attach the two tow truck safety chains
from each of the two front tow eyes of
the vehicle to the truck’s tow eyes
(Figure 47 and Figure 48).
9. Confirm air is supplied to the vehicle.
See 2.1 PREPARATION BEFORE
TOWING.
FIGURE 47
10. Raise the tow bar in order to remove
the jack stand from under the stinger
arm.
11. Lower the vehicle. The front tire should
be about 7″ to 8″ above the ground
before the tow can proceed.
FIGURE 48
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12. Use bungee cords to support the safety
chains (Figure 49).
FIGURE 49
13. Make sure that the parking brake is
released before moving the vehicle.
14. Observe safety precautions
towing.
when
FIGURE 50
Avoid sharp turns where possible as
safety chains may rub and damage the
front bumper (Figure 51)
FIGURE 51
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CAUTION
Make sure a safe distance is kept between the front of the vehicle and the tow truck. This space
ensures that vehicle does not suffer damages when being towed.
CAUTION
Make sure axle shafts or driveshaft are installed correctly after towing. Tighten axle shaft and driveshaft
nuts to the correct torque settings. Do not invert shafts.
DANGER
Do not carry passengers while the vehicle is being towed.
2.3
X-SERIES RECOVERY USING OPTIONAL REAR TOW EYES
Optional rear tow eyes allow recovery of a vehicle that is no longer on a drivable surface. Chains can be
looped around or hooked to these rear tow eyes.
CAUTION
This recovery method should be used only for a short distance with all vehicle wheels on the ground
After the vehicle has been brought back on a drivable surface, it should be lifted and towed from the front,
with front wheels off the ground.
FIGURE 52 : OPTIONAL REAR TOW EYES ON SIDE MEMBERS UNDER ENGINE CRADLE SUPPORT RAILS
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3. EMERGENCY TOWING
If the vehicle must be moved and standard towing procedures cannot be used, follow the alternate towing
procedures below.
3.1 REAR TOW USING NON-APPROVED LIFTING POINTS - EMERGENCY ONLY
CAUTION
The vehicle should NOT be lifted and towed from the rear in normal situations.
In an emergency, however, it can be moved from the rear over a very short distance such as in a parking
lot or to place the vehicle back on pavement.
Lifting the rear end from the engine cradle or from the side members located under the engine cradle
support rails should be avoided. Doing so may cause structural damage (see image further in this
document).
3.1.1
PRECAUTIONS
In an emergency or if the vehicle has to be
moved over a short distance, the side
members may be used as lifting point. Try
to lift from the strongest location along the
side members which is near the rear subframe vertical member (Figure 53).
FIGURE 53: UNAPPROVED LIFTING POINTS FOR REAR END
TOWING – SIDE MEMBERS LOCATED UNDER THE ENGINE
CRADLE SUPPORT RAILS
Lift with precautions as the vehicle may
sustain structural damage at the vertical
structure shown on the image at right (Figure
54).
FIGURE 54: VEHICLE MAY SUSTAIN STRUCTURAL DAMAGE
WHERE INDICATED WITH ARROWS DURING TOWING FROM THE
REAR
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DANGER
Do not carry passengers while the vehicle is being towed.
3.1.2
FIRST LIFT
A first lift of the vehicle is required. This first lift will allow tow cans or blocks to be placed underneath the
drive axle tires.
1. Prepare the vehicle for towing as instructed in
paragraphs 2.1 and 2.1.1
2. If not already done, chock the front wheels.
3. Retract the tow truck stinger arm (Figure 55).
4. Pre-adjust spacing between the axle fork
holders. The spacing between the most distant
edges of the folk holders should be 30 inches
(Figure 55).
No axle forks will be used for this first lift
FIGURE 55
TALL
REGULAR
5. Deploy the tow truck stinger arm. Place the fork
holders under the engine cradle transverse
beam as shown on Figure 56. Lift the tow bar
until the fork holders come into contact with the
cradle transverse beam.
CAUTION
Use caution when lifting from the engine cradle
transverse beam. Maintain the vehicle in that
situation during the shortest period of time.
Lifting from the engine cradle is the least
preferred option and should be done only if
lifting from under the side members shown
on Figure 53 cannot be achieved
CAUTION
Remember, lifting the rear end from the side
members located under the engine cradle or
by the engine cradle itself may cause
structural damage.
FIGURE 56
6. Raise the tag axle to prevent it from hanging
unsupported.
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7. On X-Series commuter vehicles only, the tag
axle air valve lever is located in the front
service compartment. Move it forward as
shown on Figure 57.
FIGURE 57:LOCATION OF COMMUTER TAG AXLE AIR VALVE
8. Lift the rear end of the vehicle high enough to
allow installation of tow cans or blocks
underneath the drive axle wheels (Figure 58).
9. With precautions, lower the rear of the vehicle.
FIGURE 58: TOW CAN
3.1.3
SECOND LIFT
1. Perform the first lift as instructed in paragraph
3.2 if not already done.
2. Retract the tow truck stinger arm.
3. Pre-adjust spacing between the axle fork
holders to 43 inches.
FIGURE 59
4. Install either long or short axle forks into fork
holders.
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TALL
or
REGULAR
5. Deploy the tow truck stinger arm. Place the
axle forks under the rear tow eyes if equipped
or under the side members (Figure 60).
Place the forks in a transversal position i.e.
perpendicularly to the side members (Figure
61).
FIGURE 60: REAR TOW EYES ON SIDE MEMBERS LOCATED
UNDER ENGINE CRADLE SUPPORT RAILS
6. Lift the tow bar until the axle forks grab the
side members (Figure 61).
If equipped with rear tow eyes, lift the tow bar
until the axle forks fit snuggly into the sidemembers tow eyes.
Avoid lifting at the side-members further
toward the rear of the vehicle (close to the
bumper)
FIGURE 61 : PROPER LOCATION WHEN LIFTING THE SIDE
MEMBERS
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7. Place the fork’s shorter finger outboard for
better clearance (see Figure 62).
FIGURE 62 : PROPER LOCATION WHEN LIFTING THE SIDE
MEMBERS – VEHICLE EQUIPPED WITH REAR TOW EYES
8. Raise the rear of the vehicle.
9. Install a jack stand under the stinger arm for
support and safety purposes and then lower
the stinger arm so it rests on the jack stand
(Figure 63). The tow cans or blocks can be
removed from under the drive axle wheels.
FIGURE 63
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10. Install the choke chains. Tie the two choke
chains together to secure the side members
to the tow bar (Figure 64 and Figure 65).
Take up any slack that may remain and
maintain proper tension on chains.
FIGURE 64
11. Shorten the stinger arm to the safest
minimum distance between the vehicle and
the tow truck to allow the towed vehicle to be
as close as possible to the truck yet allowing
enough room for the vehicle to avoid collision
with the tow truck during turns.
Stinger to the rear bumper: Between 59″
and 63″
FIGURE 65
12. Attach the two tow truck safety chains from
the vehicle engine cradle cross-member to
the truck’s tow eyes (Figure 66).
13. Raise the stinger arm and remove the
support jack stand.
14. Lower the vehicle. The drive axle tires should
be 5″ to 6″ above the ground before the short
distance tow can proceed.
FIGURE 66
Writer:
FL

MI18-18A
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3.2 VOLVO I-SHIFT TRANSMISSION TOWING MODE
The procedure will activate “tow mode” on the transmission and will allow the vehicle to be towed flat on
all wheels without having to remove the driveshaft.
CAUTION
Check vehicle VIN before starting. Earlier vehicles do not have the proper software.
This special procedure applies to:
Model
VIN
All X Series Vehicles
Model Year : 2014 -
With I-shift gearbox
From 2PCG33497EC735459 up to Current Vehicles
All H Series Vehicles
Model Year : 2013 -
With I-shift gearbox
From 2PCH33499DC712364 up to Current Vehicles
CAUTION
Forward towing only! Reverse towing (backing-up) is not allowed with this procedure or damage to
the gearbox will occur.
CAUTION
This procedure should be used in emergency only.
This procedure does not have any visual indicator, therefore, make sure all steps of the procedure are
fulfilled, or transmission damage may occur.
Towing gear 3 HR will be engaged if conditions below are fulfilled in the following sequence:
A.
B.
C.
D.
E.
Ignition key must be in the “ON” position
Engine not running
Adequate air pressure to the gearbox/ Vehicle must have electrical power
Shift pad must be in neutral
Vehicle must be towed FORWARD only
Writer:
FL

MI18-18A
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PARTS / WASTE DISPOSAL
Discard according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)
Access all our Service Bulletins on http://techpub.prevostcar.com/en/
Or scan the QR-Code with your smart phone
.
Are you a vehicle owner?
E-mail us at [email protected] and type “ADD” in the subject to
receive warranty bulletins applicable to your vehicle(s) by e-mail.
Writer:
FL