FDM-TSIB-041

Technical Service Information Bulletin
Date: April 5, 2023
Bulletin Name: FDM-TSIB-041
Model: Oshkosh S-Series
Units Affected: 2.0 Front Discharge Mixers
2.0 Transmission High
Temperature Warning
Purpose
This bulletin provides information on topics specific to transmission high temperature warnings reported in the
field. The topics listed were helpful in preventing transmission high temperature warning conditions.
Notice
• This bulletin should be read and understood in its entirety before performing this procedure.
• All procedures outlined in the bulletin must be performed by skilled service personnel. Refer to the product
service manual for descriptions of maintenance procedures.
SAFETY NOTICE
WARNING
Perform your company’s Lockout/Tagout
procedure. If your company does not have a
Lockout/Tagout procedure, follow OSHA
1910.147 and 1910.146 Confined Space as
appropriate.
Pressurized Fluid Hazard.
Never open surge tank pressure cap when
cooling system is HOT.
Cover surge tank pressure cap with heavy
cloth and turn cap slowly.
Failure to comply could result in severe
personal injury.
SAFETY NOTICE
Use appropriate Personal Protective
Equipment (PPE) as required by your
company.
Tools and Equipment Required
Customer to supply:
• Hand tools
• Torque wrench (foot pounds and inch pounds)
Parts Required
Item
Part Number
1
A000V881
Description
SENSOR, CLNT LEVEL
1
Qty.
1
Procedure
Lockout/Tagout
1. Place unit on a flat surface, engage parking brake, chock truck tires, and perform your company’s Lockout/
Tagout procedure. If your company does not have a Lockout/Tagout procedure, follow OSHA 1910.147 and
1910.146 Confined Space as appropriate.
2. The vehicle’s BATTERY DISCONNECT switch is located on the left-hand side of the battery box. Use the
battery disconnect switch when performing any maintenance so the vehicle cannot accidentally be started.
a. Turn the battery disconnect switch (Figure A, Item 1) counterclockwise so the hole on the switch aligns
with the hole in the bracket (Figure A, Item 2).
b. Install the safety lockout device ring (Figure B, Item 1) through the holes on the battery disconnect switch
and the bracket.
c. Install a padlock (Figure B, Item 2) onto the safety lockout device ring, lock it, and put the key in your
pocket. If more than one person is working on the vehicle, each person must install his or her own padlock.
1
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1
2
2
Figure A
Figure B
Coolant Level
3. Check cooling system coolant level. The 2.0 vehicle's transmission cooler design is more sensitive to coolant
levels than the legacy vehicle's system. See Figure 1. Add coolant as required.
Surge Tank
Sight Glass
Figure 1
2
Coolant Level Sensor
4. Make sure cooling system surge tank has the latest coolant level sensor installed. See Figure 2. If surge tank
does not have latest coolant level sensor installed, remove and replace with latest sensor (A000V881).
a. Allow cooling system to completely cool.
a. Drain coolant from the cooling system to bring coolant level below surge tank level sensor.
a. Install new sensor (A000V881) hand tight.
b. Torque sensor to 26 in lbs. using hex area of sensor.
c. Clock sensor an addition 1/4 to 3/4 turn so the sensor connector is vertical.
d. Refill cooling system.
Coolant Level
Sensor
Old Coolant
Level Sensor
(A000G735)
Figure 2
3
New Coolant
Level Sensor
(A000V881)
Vehicle Electrical Connections
5. Check vehicle electrical connections at various critical locations. Loose electrical connections can cause
false readings. See instructions in bulletin FDM-TSIB-024.
Figure 3
Transmission Range Selection
6. Follow range selection guidelines as outlined in the vehicle's operator manual. See Figure 4.
Figure 4
7. Remove lockout/tagout and tire chocks.
Continuous Improvement:
The change included in this document is part of the
McNeilus Continuous Improvement Process.
McNeilus’s quality policy is providing customer satisfaction
through innovative products, dedicated service, and a
constant focus on continuous improvement.
4
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