DRESSTA TD-25M EXTRA, Service Manual

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SECTION 17
MOUNTED EQUIPMENT
Page 22
TD-25M EXTRA DRESSTA
LIFT CYLINDER YOKE
17. LIFT CYLINDER YOKE REPLACEMENT (Refer to Fig. 17.14)
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 neutral 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.
WARNING! Due to the considerable weight and bulk of each bulldozer
component, a suitable hoist or lifting device MUST be used. Remove each
component separately using suitable blocking on the remaining components.
IMPORTANT: Disconnected hydraulic lines must be capped with the correct size plastic cap.
If caps are not available, use tape or rubber stoppers. Openings must never be plugged with rags.
This practice could introduce dirt or lint into critical hydraulic components. Tag all disconnected
lines to facilitate proper installation.
Fig. 17.14. Lift Cylinder Yoke
1. Lift Yoke Assembly
2. Lube Fitting 3. Yoke Cap
4. Spring Pin 5. Yoke Bushing
6. Lift Cylinder Yoke 7. Wiper Ring
1. Remove the hydraulic lift cylinder. Refer to SECTION 10C for removal procedure.
2. Rotate the yoke (6) 90 degrees toward the front of the machine and remove the yoke from the
crosstube. The ring (7) will come out with the yoke.
3. Install the new yoke as follows:
a). Install the new ring (7) over the shaft of the yoke (6).
b). If necessary, install new bushings in the ends of the cylinder crosstube (refer to SECTION 9,
FRAME).
c). Align the tang of the eccentric yoke (6) with the slot in the crosstube. Insert and turn the yoke
90 degrees to the rear of the machine. The turning action will lock the yoke into position.
4. Install the hydraulic lift cylinder. Refer to SECTION 10C for installation procedure.