GRILL 3360021 - Caterpillar

THE GEARBOX SHAFT MAY BIND IN THE DRIVE PLATE HUB THEN SUDDENLY BREAK LOOSE AND ALLOW THE GEARBOX TO SWING OUTWARD. PERSONAL INJURY COULD RESULT. DO NOT STAND NEAR THE GEARBOX.
14. Move the gearbox straight outboard from the engine until the shaft is free.15. If necessary, remove the drive plate from the flywheel.Disassembling The Pump Drive Gearbox
1. If the adaptor sleeves stayed with the gearbox, remove them.2. Remove the input shaft, flywheel cover and input gear from the gearbox.3. Remove the pump adaptor plates from the gearbox.4. Remove the drive gears from the gearbox. The gears will remain with their bearings as sub-assemblies.5. Remove the bearings from the gears with a puller.6. Inspect the case for cracks or other damage, especially around bolt holes and shoulders that support bearings.7. Clean and inspect gears for chipped, broken or cracked teeth or splines.8. Clean and inspect the bearings.Assembling The Pump Drive Gearbox
Reassemble in reverse order of disassembly. Turn the input shaft by hand to ensure that the unit is free running. (Any binding of bearings in housing bores will load the bearings endwise and cause excessive heat when running.) Use all new gaskets, seals and O-rings. Cover openings to keep dirt out of the gearbox.Installing The Pump Drive Gearbox
The operating lifetime of the gearbox depends a great deal on proper installation and inital startup. Misalignment between engine components and/or gearbox components can drastically reduce the life of the gearbox. It is, therefore, good practice to check the flywheel and flywheel housing runout before installing the gearbox. See Powerpack 4.0-8 for procedures to check the runnouts.
INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH.
1. Install the drive plate.2. Attach a lifting device to the pump drive gearbox. The gearbox weighs approximately 230 pounds (104.5 kg).3. Move the gearbox into position at the rear of the engine. Align the splines on the input shaft with the splines on the drive plate, then move the gearbox until the flywheel cover is flush with the flywheel housing. Install the mounting bolts in the flywheel cover. 4. Attach a lifting device to the ground drive pump and transmission lube pump. The assembly weighs approximately 200 pounds (90 kg).5. Move the pump into position near the gearbox, coat the pump shaft with noncorrosive grease, position the O-ring, insert the shaft into the gearbox, and install the mounting bolts.6. Repeat steps 1 through 3 for the vibrator pump and auxiliary pump assembly and then for the conveyor pumps assembly. The vibrator pump assembly weighs about 109 pounds (49 kg). The conveyor pump assembly weighs about 146 pounds (66 kg).7. Thoroughly clean around the pump ports and hydraulic hose ends, then connect the hoses to the pumps.8. Connect the electrical wires to the pumps.9. Loosen the supply hose connection at each pump until air-free hydraulic oil flows from the connection, then tighten the connection.
THE SUPPLY HOSE TO EACH PUMP MUST BE FILLED WITH HYDRAULIC OIL BEFORE