Operation and maintenance manual

Section 120-0010
Transmission - Transmission and Mounting
SM 2124 Rev 3 8-03
28
17. Prior to installing the cab, ensure that all connections
to the transmission, other than cab connections, are
connected securely and properly clipped.
18. Install the cab assembly on the front frame. Refer
to Section 260-0010, CAB AND MOUNTING.
19. Connect transmission harness at the cab floor
and earth strap between LH side of the transmission
and the frame.
20. Connect main frame harness and electrical
connections at front left hand of the cab. Secure
cover plate with mounting hardware removed during
removal.
21. Fill hydraulic tank with hydraulic oil specified in
Section 300-0020, LUBRICATION SYSTEM. Refer to
Section 230-0040, HYDRAULIC TANK for fill level
and procedure.
22. Fill transmission with engine oil specified in
Section 300-0020, LUBRICATION SYSTEM. Check
the oil level as described under 'Oil Level Check'.
23. Connect the following cables and connectors in
the order given to prevent serious damage to the
engines electrical components.
a - ECM engine to transmission datalink connector
(6 pin RHS)
b - ECM sensor harness connector (30 pin LHS)
c - ECM power harness connector (5 pin RHS)
d - ECM interface harness connector (30 pin RHS)
e - Transmission (Est-37) connector
f - Body hydraulics joystick
g - Alternator supply cables
h - Alternator earth cables
i - Battery supply cables
j - Battery earth cables
24. Turn the battery master switch to the 'On'
position, start the engine and make an operational
check of all lines and electrical connections
disconnected during removal. Check for leaks and
tighten lines and fittings as required. Allow
transmission to warm up and recheck all connections
for leaks.
25. Ensure parking brake is applied, disconnect
steering lock bar and secure in the 'Stowed' position.
Remove wheel blocks from all road wheels.
26. Check for correct operation of the transmission,
shift selector and warning lights.
MAINTENANCE
Periodic Inspections
For easier inspection, the transmission should be kept
clean. Make periodic checks for loose mounting bolts
and leaking air and oil lines. Check the condition of
electrical harnesses and connections regularly.
Transmission breather (10, Fig. 2) should be checked
on a regular basis, and as frequently as necessary,
depending on operating conditions. A badly corroded
or plugged breather restricts proper breathing and
causes a buildup of condensation and subsequent oil
deterioration.
Oil Level Check
WARNING
When checking the oil level, be sure that the
parking brake is applied and all road wheels are
securely blocked.
Check the transmission oil level and add oil if low,
every 10 hours/daily. Use only oil specified in
Section 300-0020, LUBRICATION SYSTEM.
Because the transmission oil cools, lubricates and
transmits hydraulic power it is important that the proper
oil level be maintained at all times. If the oil level is too
low, the converter and clutches will not receive an
adequate supply of oil. If the oil level is too high, the oil
will aerate and the transmission will overheat. It is
absolutely necessary that the oil put into the
transmission is clean.
Cold Oil Level Check - Engine Off
This check is made only to determine if the transmission
contains sufficient oil for safe starting. Oil level should
show at least 6" (152 mm) above the hot oil maximum
(MAX 80° C) mark on the dipstick. Add oil if low.
Cold Oil Level Check - Engine Running
This cold check is valid only when transmission oil
temperature is below 40° C (104° F).
1. Position the vehicle on a level work area, apply the
parking brake and block all road wheels securely.
2. With parking brake applied, gear selector in neutral
and engine idling, check the oil level on dipstick. Oil
level should be up to the 'COLD MIN' mark on the
dipstick. Add oil if low.