TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 715 of 894
TRUCK SERVICE MANUAL
STEERING
HT 700D SERIES TRI
Para 3-14/3-19
(7)
Wash off all the external grease with
solvent.
(8)
Drain oil as described in paragraph 3-7,
above.
(9)
Install a new oil filter(s).
(10)
Refill transmission with Dexron automatic
transmission fluid to proper level.
3-15. CHECKING OIL PRESSURES
Oil pressures may be checked during operation
of the transmission to assist in the location of
malfunctions. P r e s
s
u r e check points are shown in
figure 3-1. Make pressure tests in conjunction with
troubleshooting procedures
outlined in paragraphs 3-16
through 3-18. Refer to paragraph 1-16.
3-16.
TROUBLESHOOTING-BEFORE REMOVAL OR
OPERATION
a. Visual Inspection. Do not operate the vehicle
prior to completing the procedures described in this
paragraph. Inspect for oil leakage.
V i s u a l l y inspect a
11 splitlines, plugs, all hose and tube connections at the
transmission and cooler. Oil leakage at split-lines may be
caused by loose mounting bolts or defective gaskets.
Tighten all bolts, plugs, and connections where leakage
is found. Check to insure that the modulator control cable
and linkage are free.
b. System
Knowledge.
The
engine
and
transmission must be regarded a s a single package
during troubleshooting. A thorough study of the
description and operation of the components and
hydraulic system will be helpful in determining the cause
of trouble.
3-17.
TROUBLESHOOTING-BEFORE REMOVAL
AND DURING OPERATION
a. Determine Trouble Cause. If inspection (para 3-
16a, above) does not reveal the cause of trouble, and the
vehicle
is
operational,
further
troubleshooting
is
necessary.
Do not remove the transmission from the
vehicle until the causes of trouble are checked against
the troubleshooting chart (para 3-19, below).
b. Properly Tuned Engine. To make a thorough test
of the vehicle-mounted transmission, be sure that the
engine is properly tuned and that the oil level in the
transmission is correct. (Refer to para 3-3 for checking oil
level. )
3-18. TROUBLESHOOTING-AFTER REMOVAL FROM
VEHICLE
When the malfunction of a transmission is not
ascertained by tests or inspections before removal from
the vehicle, the transmission may be mounted in a test
stand and checked (if a test stand is available). Particular
attention should be given to proper oil level and to correct
linkage adjustment in every transmission test.
3-19. TROUBLESHOOTING
The troubleshooting information, below, outlines
the possible causes of transmission troubles and their
remedies. Capital letters indicate the symptom; numerals
following the symptom indicate several p o s i b 1 e
causes; corresponding numerals in the right column
indicate remedies for the causes.
708
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