Drive Unit (See Figs 14 and 15)
1.Disconnect the hydraulic inlet hose (92) from the paint pump's90° swivel union (45),
2.Loosen the coupling nut of the elbow (41) and disconnect the hydraulic oil drain hose (2) from the oil cooler inlet elbow (41).
3.Disconnect the bypass hose (85) from the bypass valve (84).
4.Remove the oiler cooler (69), the fan guard (76), the cooler retaining screw (40) and clamp (68), and the drain hose (2). Loosen the cooler drain connector nut (42). Pull the cooler up, out of the housing.
5.Remove the locknuts (27) from the four engine mounts (31).
6.Remove the four locknuts (27) from the filter seal plate (160) screws.
7.Lift up the entire drive assembly (engine, fan, and hydraulic pump) and tilt it forward.
8.Remove the four screws (12) holding the cooler housing (60) to the adapter plate (64) and take the hydraulic pump (70) and cooler housing off of the engine (32).
9.Insert a hex socket wrench between the blades of the fan wheel (75) and loosen the coupling setscrew (38a) so you can remove the flexible coupling (38) and key (38b). Loosen the fan wheel setscrew (X) and remove the fan wheel (75).
10.Unscrew the four capscrews (34) and remove the adapter plate (64) from the engine.
11.Unscrew the four locknuts (20) from the engine mounting screws (3) and lift the engine off the mounting plate (65).
12.Replace parts as needed and reassemble in reverse order of disassembly with special attention to the following:
NOTE: Set the gap between the two halves of the flexible coupling (38) at 1/32 in. (0.8 mm) and tighten the setscrews firmly. See Fig 15.
X
TOP CUTAWAY VIEW
OF COUPLINGS (38) INSIDE COOLER HOUSING (60)
Fig15 __________________________________________________________________________
