DRESSTA TD-25M EXTRA, Service Manual

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HYDRAULIC TORQUE CONVERTER
SECTION 7B
Page 7
DRESSTA TD-25M EXTRA
GENERAL
5. Operate the engine at full throttle and be filling the container for 30 seconds, omitting the initial,
stronger oil flow-out.
6. Stop the engine and turn the electric master switch OFF. Disconnect the hose from flywheel
housing (1). Reconnect the drain hose end (3) to the engine flywheel housing (1). Reinstall
transmission case guard to the bottom of the machine.
7. Carry out a measurement of the drained oil.
A. If volume of oil is less than 3.5 [l] (7 [l], per minute), the internal leakage of torque
converter is allowable.
B. If volume of oil is more than 3.5 [l] (7 [l], per minute), the internal leakage of torque
converter exceed the limit. The torque converter should be removed from the machine and
repaired.
TORQUE CONVERTER
6. REMOVAL
IMPORTANT: Before removing the torque converter perform diagnostics of failures according to
the description in Paragraph 4 in this SECTION, and check for oil leaks according to Paragraph 5
in this SECTION, so as to be sure that the disassembly torque converter is advisable.
WARNING! Before working at the machine, be sure that the blade and ripper have
been lowered to the ground, engine is OFF, the drive train control lock lever is in
locked (ON) position and parking brake is set. The starting switch and the electrical
system master switch are turned OFF, keys are removed and the controls are
tagged to prevent inadvertent engine starting.
IMPORTANT: Disconnected hydraulic lines must be capped with the correct size plastic caps.
If these caps are not available, tape or clean rubber corks may be used. Hydraulic openings must
never be plugged with rags. This practice could introduce dirt or lint into critical hydraulic
components of the machine. Also tag all disconnected lines to facilitate correct and easier
installation.
1. Turn the master switch to the OFF position and take out the key.
2. Remove the transmission case guard from the bottom of the machine. Drain the equipment
hydraulic reservoir as described in the OPERATOR'S MANUAL.
3. Remove the ROPS/FOPS structure (if equipped), cab and platform. Refer to SECTION 13 for
this procedure.
4. Disconnect the breather hose (5, Fig. 7B.4) from the torque converter (6).
5. Remove the equipment pump (1). Refer to SECTION 10A for removing procedure.
6. Disconnect the electrical harness (4) from the torque converter oil temperature sensors (2).
Disconnect the oil cooler hose (6) from torque converter tee connector. Remove the tee
connector with torque converter oil temperature sensors (2) from the torque converter (7).
7. Remove the charge and scavenge pump (8). Refer to SECTION 7C for this procedure.
8. Remove the fan drive pump (3). Refer to SECTION 10A for this procedure.