Complete workshop repair & service manual with electrical wiring diagrams for Bobcat 620 Loader. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Bobcat 620 Loader service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

6549746 (3-99) - 620 Operation & Maintenance Manual.pdf
6549846 (9-75) - 620 Service Manual.pdf

EXCERPT:
3 - 10.4 Installing the Hydrostatic Motor
1. Install the motor into the chaincase.
2. Install the four bolts and tighten to 65–70 ft.–lbs. (88–95 Nm) torque.
3. Connect the hoses to the correct ports of the hydrostatic motor (Fig. 3–102a). (Short hoses to the upper ports, long hoses to lower ports).
4. Tighten the hoses. Install the motor cover (Fig. 3–103).
5. Install the wheels on the loader.
6. Check the hydraulic/hydrostatic reservoir fluid level. Add fluid as needed. 3–10.5 Start–Up Procedure for the Hydrostatic Motor
Because of the close tolerances in the hydrostatic motors it is very important that the motor is NOT OPERATED WITHOUT A LOAD after being repaired.
The motor MUST BE PUT UNDER FULL LOAD condition for at least 10 minutes.
FULL LOAD can be accomplished by pushing some heavy object or material.
When driving the loader under a no load condition to a full load condition use a low engine RPM and only a small amount movement of the steering levers. Keep the no load condition to a minimum until the break–in period is completed.
3–11 STEERING CONTROLS
3–11.1 Installing Steering Linkages – 630–S/N 15300 & Below; 631–S/N 12253 & Below; 632–S/N 15450 & Below;
1. Push the rubber bushings into the pintle levers (one each way).
2. Install pintle levers on the front and rear pintle shafts of the pump, aligning the keys with the keyways. The lobes of the pintle levers go toward the front of the loader.
3. Leave enough clearance so the levers are 1/8’’ away from the bolts in the pintle covers.
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