Lull 944E-42 Service Manual - Manual (Page 95)

6-9 944E-42
Transmission
5. Transmission overheating
(oil above 248° F (120° C)).
1. Low oil level. 1. Fill transmission to correct level
with Mobilfluid 424 ®
(ISO Grade 46). Refer to
Section 2.4, “Fluid and
Lubricant Capacities.”
2. Clogged radiator. 2. Remove debris from the
radiator.
3. Transmission filled with incorrect
oil, or oil contaminated.
3. Drain transmission and fill to
correct level with Mobilfluid 424 ®
(ISO Grade 46). Refer to
Section 2.4, “Fluid and
Lubricant Capacities.”
4. Excessive “roading.” 4. Stop and idle the engine.
5. Restriction in oil cooler hoses. 5. Replace cooler hoses.
6. Pump worn or damaged. 6. Repair or replace pump
assembly.
7. Engine thermostat stuck. 7. Replace engine thermostat.
6. Grinding or “clunking” noise
from transmission.
1. Oil level too low. 1. Fill oil to correct level. Refer to
Section 2.4, “Fluid and
Lubricant Capacities.”
2. Transmission filled with incorrect
oil.
2. Drain transmission and fill to
correct level with Mobilfluid 424 ®
(ISO Grade 46). Refer to
Section 2.4, “Fluid and
Lubricant Capacities.”
3. Incorrect clutch engagement. 3. Refer to Section 9.11.8,
“Transmission Solenoid Valves.”
4. Internal damage. 4. Repair or replace parts as
needed.
5. Broken diaphragm (flex plate). 5. Replace diaphragm (flex plate).
Refer to Section 6.4.1,
“Transmission Removal.”
6. Loose diaphragm (flex plate)
mounting capscrews.
6. Tighten capscrews.
6.5.1 Transmission Troubleshooting (Continued)
Problem Cause Remedy