TM 5-3810-307-24-1-2
8.
INSTRUCTIONS CONCERNING INSPECTION
As already stated in maintenance instructions, all the vehicles with ZF Power Steering Gear should
be taken to the workshops for inspection of ZF Steering System as well as of the ZF Oil Pumps
after completing the mileage shown below:
Long-distance
Mixed and Short-
Driving on Construction
Driving
distance Driving
Sites and Cross-country
100 000 km
100 000 km
80 000 km
I.
Inspection
60 000 miles
60 000 miles
50 000 miles
2 500 operating hours
200 000 km
175 000 km
150 000 km
II. Inspection
120 000 miles
105 000 miles
90 000 miles
4 500 operating hours
300 000 km
250 000 km
200 000 km
III. Inspection
180 000 miles
150 000 miles
120 000 miles
6 000 operating hours
The following description applies only to inspections I and II. Removing the steering gear and
pumps from vehicle are not required, except when the inspection shows non-permissible play or
other faults.
To increase traffic safety, we recommend disassembly of steering gears and pumps during III.
inspection to check the mechanical steering components (visual checkup of all and crack test of
highly stressed parts), and to install new seals or gaskets.
8.1
Performance of I and II Inspections
NOTE
a) The description of the following inspection jobs is based on a dual
circuit power steering gear, which differs from the single circuit power
steering gear only by a second steering control valve, located behind
steering nut. For inspecting the hydraulic operation of steering gear
and pump of single circuit power steering gear the same conditions
apply as described under Para. 8.1.5.
b) To evaluate the condition of vehicles and of the power steering gear
prior to performing the following inspection and to compare the
performance of the power steering gear before and after the
inspection, a test drive is recommended. This recommendation
applies above all, whenever the evaluation of the steering system by
the driver is poor. Prior to test drive, check oil level and venting to
steering system.
8.1.1
Checking Mechanical Function of Steering
8.1.1.1
Checking Seat of Fastening Screws
Retighten screws and bolts on steering system and steering attachment to specified tightening
H-24 Change-1
