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Navistar WorkStar 7400 - Lubrication and Maintenance Interval - Recommended Synchronized Intervals

Navistar WorkStar 7400
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Maintenance Instructions
Ask your service technician to examine the steering mechanism.
Minor adjustments could head off further problems.
Check tie rod ends, drag link ends, and kingpins. Joints
and fasteners must be tight. Articulating joints must be well
lubricated.
Check for installation and spread of cotter pins and tightness of
nuts at both ends of tie rod and drag link.
Check that pitman arm (steering arm at steering gear) mounting
is tight and locked. Check system for leaks or hose chang.
Repair any concerns at once.
Maintain proper steering gear and power steering pump uid
levels.
CAUTION
To prevent power steering uid overow when
hot, be sure to utilize the appropriate HOT or
COLD uid temperature-specic level marks if
displayed on power steering reservoir.
Regularly inspect steering column joint bolts and steering
linkage, particularly for body-to-chassis clearance.
NOTE: Have any steering problems corrected at once by a
qualied service technician.
Tightening Steering Intermediate Shaft Joint Bolts
As a good maintenancepractice, it is recommended that steering
intermediate shaft joint bolts be checked for tightness every “B”
PM interval or annually, whichever occurs rst. Tighten bolts to
torque specied in the Torque Specication chart at the end of
this section. DO NOT OVERTIGHTEN.
Lubrication Points
The steering shaft is lubricated at the three points shown in
the illustration below. For the correct maintenance interval,
refer to SECTION 7 MAINTENANCE INTERVALS AND
SPECIFICATIONS.
3879634R1 193

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