Manitowoc Grove RT540E Service Maintenance Manual page 247

RT540E SERVICE MANUAL
Troubleshooting Procedures
SYMPTOM
1. Low clutch pressure.
2. Low converter charging
pressure.
3. Overheating.
4. Noisy converter.
5. Lack of power.
Removal
1. Extend and set the outriggers just enough to take up the
slack in the outrigger pads. Chock the wheels.
2. Position the boom over the side and stop the engine.
3. Remove the engine and transmission/torque converter
from the crane as an assembly. Refer to Engine, page 7-
1 in this Section.
4. Remove the hydraulic pumps from the transmission/
torque converter. Cover all openings. Refer to Hydraulic
Pumps, page 2-14 for removal of the pump.
NOTE: The transmission/torque
approximately 374 kg (824.5 lb) dry.
5. Attach an adequate lifting device to the transmission/
torque converter and take up any slack.
6. Remove the hardware securing the drive plate assembly
to the flywheel.
GROVE
PROBABLE CAUSE
a. Low oil level.
b. Clutch pressure
valve spool stuck open.
c. Faulty charging pump.
d. Broken or worn clutch shaft or
piston sealing rings.
e. Clutch piston bleed valve stuck
open.
pump a. Low oil level.
b. Suction screen plugged.
c. Defective oil pump.
a. Worn oil sealing rings.
b. Worn oil pump.
c. Low oil level.
a. Worn oil pump.
b. Worn or damaged bearings.
a. Low engine RPM at converter
stall.
b. See "Overheating" and make
same checks.
converter weighs
Published 4-20-2015, Control # 502-01
a.
regulating b. Clean valve spool and housing.
c.
d. Replace clutch shaft or sealing
e.
a.
b. Clean suction screen.
c.
a.
b. Replace pump.
c.
a.
b. A complete disassembly will be
a.
b. Make corrections as explained
7. Remove the hardware securing the transmission/torque
converter housing to the engine flywheel housing.
Installation
NOTE: The transmission/torque
weighs approximately 374 kg (824.5 lb) dry.
1. If a new transmission/torque converter is to be installed,
remove all fittings and brackets from the old one and
i n s ta l l t h e m i n t h e s a m e l o c a t i o n s o n t h e n e w
transmission/torque converter.
2. Install the piston and single section hydraulic pumps on
the transmission/torque converter. Refer to Hydraulic
Pumps, page 2-14 for installation of the hydraulic pump.
3. Position the transmission/torque converter to the engine
with the lifting device.
4. Remove all burrs from the flywheel mounting face and
nose pilot bore. Clean the drive plate surface with
solvent (Figure 7-11).
POWER TRAIN
REMEDY
Fill to proper level. Refer to
LUBRICATION (pg 9-1).
Replace pump.
rings, as applicable.
Clean bleed valves thoroughly.
Fill to proper level.
Replace pump.
Remove, disassemble, and
rebuild converter assembly.
Fill to proper level.
Replace pump.
necessary to determine what
bearing is faulty.
Tune engine and check
governor.
in "Overheating."
converter assembly
7
7-23