NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M100 Tow Tractor Manual No. 46052
PAGE 1
CHAPTER 2 MAINTENANCE
2 TROUBLESHOOTING
AUGUST 31, 2008
2. TROUBLE SHOOTING
Perform lockout/tagout procedures before adjusting, lubricating, cleaning
or otherwise servicing. Failure to do so could result in unexpected startup and could
cause serious injury or death.
To minimize risk of serious injury or death, follow these hydraulic
servicing precautions:
• Follow all necessary lockout/tagout procedures.
• Hydraulic systems have residual, stored pressure. Relieve all pressure from the
hydraulic system before servicing.
•
•
seek medical attention.
• Wear eye protection when servicing hydraulic components or systems.
• Keep all hoses and connections in good serviceable condition. Check before start-up
and periodically during operation.
• Do not investigate for leaks with hands. Use a large piece of cardboard.
•
2.1 STEERING SYSTEM OVERVIEW - USED WITH C6 TRANSMISSION
automotive systems, it uses oil under pressure to provide most of the turning force
to the front wheels. The system uses a control valve and an engine-belt-driven oil
pump to supply oil pressure to a hydraulic piston. The hydraulic piston and control
valve are contained in the steering gear unit. A pitman arm/drag link combination
attaches the steering gear unit to the left-hand steering arm on the front axle
assembly. The control valve senses steering resistance or pressure and directs oil
boost assembly.
2.1.1 Problem Diagnosis
Most steering problems can be readily diagnosed by visual inspection. Problems
pressure test, see 2.2 - 2.3.
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