TM 5-2410-240-23-1
0020
Table 1. Powertrain and Chassis Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Jerky Modulation
4. Perform Hydrostatic Pump and
Machine Operation OK - Return
Continued
Motor Solenoid Calibration (WP
machine to service.
0031). Verify correct operation of
Machine Operation Still Jerky -
machine (TM 5-2410-240-10).
Proceed to step 5.
5. Lift and support machine high
enough so that tracks do not
touch ground.
Left Track Jerky - Replace left
6. Slowly increase speed ratio from
01.5.
hydrostatic pump (WP 0133).
Right Track Jerky - Replace right
hydrostatic pump (WP 0134, WP
0135).
Neither Track Jerky - Proceed to
step 7.
7. Slowly increase speed ratio from
Left Track Jerky - Replace left
1.53.0.
hydrostatic drive motor (WP 0126).
Right Track Jerky - Replace right
hydrostatic drive motor (WP 0126).
2. Low Top Speed
WARN I N G
DO NOT disconnect or remove any hydraulic system hoses, tubes, or
fittings unless engine is shut down and hydraulic system pressure has
been relieved. Tighten all connections before applying pressure.
Escaping hydraulic fluid under pressure can penetrate skin.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool
before removing any hydraulic fitting.
Wear protective eye covering and gloves.
Lubricating/hydraulic oils used in performance of maintenance can be
very slippery. Immediately wipe up any spills.
Use extreme caution when handling heavy parts. Provide adequate
support and use assistance during procedure.
Failure to follow these warnings may result in injury or death to
personnel.
C AU T I O N
Wipe area clean around hydraulic system, and cap all hydraulic hose
ends along with component connections during removal to protect
against contamination. Failure to follow this caution may cause damage
to equipment.
N OT E
Perform this test only if condition is active.
