GROVE 7-1
CD3340B/YB4411 TRANSMISSION AND TORQUE CONVERTER
Published 04/07/2015 Control # 569-00
SECTION 7
TRANSMISSION AND TORQUE CONVERTER
SECTION CONTENTS
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
General Technical Data . . . . . . . . . . . . . . . . . . . . 7-1
Clutch Solenoid Technical Data . . . . . . . . . . . . . . 7-2
Description Of Operation. . . . . . . . . . . . . . . . . . . . 7-3
Torque Converter . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Hydraulic Operation . . . . . . . . . . . . . . . . . . . . . . . 7-5
Drive Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Clutch Operation. . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
General Troubleshooting . . . . . . . . . . . . . . . . . . 7-11
Troubleshooting (Electrical) . . . . . . . . . . . . . . . . 7-14
Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
Solenoid Identification . . . . . . . . . . . . . . . . . . . . . 7-21
Test For Clutch Leakage . . . . . . . . . . . . . . . . . . . 7-21
Converter Stall Test. . . . . . . . . . . . . . . . . . . . . . . 7-24
Pressure and Flow Tests. . . . . . . . . . . . . . . . . . . 7-25
Transmission Repair . . . . . . . . . . . . . . . . . . . . . . 7-26
Servicing the Torque Converter. . . . . . . . . . . . . . 7-29
Servicing the Transmission . . . . . . . . . . . . . . . . . 7-31
Transmission Gearbox Repair. . . . . . . . . . . . . . . 7-31
Output Shaft Removal - Larger Diameter Gear . . 7-48
Mainshaft Clutch Repair . . . . . . . . . . . . . . . . . . . 7-53
Layshaft Clutch Repair . . . . . . . . . . . . . . . . . . . . 7-55
(PTFE) Piston Ring Seal Installation Procedure . 7-58
Solenoid Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-59
TECHNICAL DATA
General Technical Data
Description
Full electrohydraulic transmission unit with input, reverse, and mainshaft
clutch packs. Torque converter is integral.
Designation PS750
Weight (dry) 220 kg (484 lb)
Number of Teeth:
Transfer Gear
Layshaft
45
18
Gear Ratios:
1st
2nd
3rd
4th
5.72:1
3.23:1
1.77:1
1.00:1
Torque Converter Dia. 279 mm (11 in)
Torque Converter at Stall 2.20:1
Torque Converter Color Code Identification:
Color Coded Dots 2 Purple
1 White
Minimum Engine RPM at Converter Stall:
2nd Gear
3rd Gear
2075 rpm
2050 rpm
Reference Only