IS-18091

Instruction Sheet
IS-18091
Tie Rod 610052 First Installation Instructions
Prevost vehicles with Dana S82, S84 / S84U I-beam axles 1994- today
Replaces: 611024; 611025; 611292; 611026.
First Release
08-15-2019
MATERIAL
Kit #IS18091 includes the following parts:
Part No.
Description
Qty
610052
TIE ROD ASSY
1
610051
NUT HEX SELF LOCKING M24-1.5 (Single use)
2
IS-18091
INSTRUCTION SHEET
1
FI-18091
FEUILLE D’INSTRUCTION
1
NOTE
Material can be obtained through regular channels.
DESCRIPTION
Use these instructions when replacing the drop joint tie rod on S82, S84 / S84U I-beam axles. The new
tie rod will be adjusted to the length of the original; however, a steering alignment needs to be performed
after replacement.
FIGURE 1: OLD BELOW VS NEW ABOVE
TOOLS
•
•
•
•
•
•
36mm crowfoot adapter
Torque wrench
1 1/8” socket
22mm socket
22mm wrench
8mm hex bit socket
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PROCEDURE
DANGER
Park vehicle safely, apply parking brake, stop engine. Prior to working on the vehicle, set the ignition
switch to the OFF position and trip the main circuit breakers equipped with a trip button. On Commuter
type vehicles, set the battery master switch (master cut-out) to the OFF position.
Lock out & Tag out (LOTO) must be performed during set-up, maintenance or repair activities. Refer to
your local procedure for detailed information regarding the control of hazardous energy.
1.
Lift vehicle.
2.
Place jack stands under front
axle.
Use 10 US ton (20 000 lb; 9072
kg) safe working load (SWL)
jack stands. Refer to MI18-18
for additional information.
3.
Remove wheels.
FIGURE 2: JACK STAND PLACEMENT
4.
Measure tie rod ball joint center
to center distance. Note Value
for reference.
_________________________
5.
Disassemble former tie rod by
removing the cotter pin and
castle nut. (1 1/8” socket)
6.
Disengage the ball joint pin
from the levers.
FIGURE 3: TIE ROD BALL JOINT CENTER TO CENTER MEASUREMENT
Assuming axle alignment was
good; keep the original tie rod
intact for reference.
FIGURE 4: BALL JOINT DISSASSEMBLY
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7.
Clean all mating surfaces
thoroughly, removing grease
and corrosion.
8.
Finish cleaning
cleaner fluid.
with
brake
FIGURE 5: CLEANING
9.
Perform
coarse
length
adjustment of the new tie rod to
get close to the measured
length by screwing / unscrewing
the ball joint by one turn
increments.
FIGURE 6: ADJUST BY ONE TURN INCREMENTS
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10. Next, perform fine adjustment
using the adjuster sleeve to
reach the same length. (See
Figure 7). If possible, confirm
with the original.
The only part turning should be
the sleeve (Figure 7). Do not
adjust by turning the tube or the
joint.
FIGURE 7: NEW TIE ROD LENGTH ADJUSTEMENT
FIGURE 8: FINE ADJUSTMENT USING THE SLEEVE.
11. Install new tie rod on axle.
Orient tube bend so it is
pointing down and parallel to
the axle beam.
FIGURE 9: TIE ROD ORIENTATION
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12. Use a torque wrench with a
36mm crowfoot adapter and
8mm hex bit to prevent ball joint
rotation.
13. Tighten ball joint top-locking nut
to 155-170 lb-ft (210-230 Nm)
Apply torque seal mark.
Note: These nuts are single use
and should be replaced every
time they are unscrewed.
FIGURE 10: BALL JOINT TIGHTENING
14. Use 22mm socket and wrench.
Tighten clamp bolts
to
107-129 lb-ft (145-175 Nm)
Apply torque seal mark..
FIGURE 11: CLAMP TIGHTENING
15. Re-install wheels. Tighten to
450-500 lb-ft (610-678 Nm) in
proper sequence.
16. Lower vehicle.
FIGURE 12: WHEEL INSTALLATION.
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17. Perform vehicle steering alignment. To adjust toe-in, use the adjuster sleeve. (Figure 7)
18. Refer to your vehicle’s Maintenance Manual in Section 14-Steering under “Front Wheel Toe-in.
Maintenance information
The new tie rod requires regular inspection. Refer to maintenance information MI18-45, available on the
Prevost technical publications web site.
PARTS / WASTE DISPOSAL
Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)
Writer: FL