DRESSTA TD-25M EXTRA - Page 70

SECTION 7 DRIVE TRAIN
Page 18
TD-25M EXTRA DRESSTA
SERVICE DIAGNOSIS
COMPLAINT
PROBABLE CAUSE REMEDY
Slow or Erratic Transmission Clutch Engagement
1. Low transmission oil pressures Check oil pressures. Refer to Par. 10,
TRANSMISSION AND TORQUE CONVERTER
OIL PRESSURE TEST.
2. Rate of rise valve malfunction Check valve and screen under valve. Install new
valve housing gasket.
3. Range selector valve malfunction Check valve. Repair or replace.
No 2
nd
and/or 3
rd
Gear Engagement
1. Electrical or electronic system malfunction Refer to SECTION 8, ELECTRICAL
Erratic Operation in Preselection or Self-Reduction Gear Mode
1. Electrical or electronic system malfunction Refer to SECTION 8, ELECTRICAL
9. SPECIFICATIONS
Charge and Scavenge Pump
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . gear, dual element
Capacities @ 2094 engine rpm:
Front (scavenge) section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 l/min
Rear (charge) section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 l/min
Transmission Test Oil Pressures
Main oil pressure (M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1790 – 1930 [kPa]
Torque converter inlet oil pressure (C):
In neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 790 - 930 [kPa]
In gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 790 - 930 [kPa]
Lubrication oil pressure (L):
In neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 - 450 [kPa]
In gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 - 350 [kPa]
Transmission forward and reverse clutch oil pressures (FR):
In neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 [kPa]
In gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main (M) minus 0 – 70 [kPa]
Transmission first, second and third speed clutch oil pressures:
In neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 [kPa]
In gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main (M) minus 100 – 170 [kPa]
Steering Test Oil Pressures
Main oil pressure (M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1790 – 1930 [kPa]
Right or left drive clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main (M) minus 0 – 35 [kPa]
Right or left brake clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main (M) minus 0 – 35 [kPa]
Torque Converter
Stall Speed:
Converter only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1680 – 1820 [RPM]
Converter and hydraulic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1520 – 1680 [RPM]