GEAR 1W4742 - Caterpillar

start by: a) remove fuel injection pump housing and governorb) remove governor1. Remove the fuel injection pumps as follows: a) Remove the rack centering pin cover (1). Move the rack until the centering pin can be depressed. Install the pin cover so the edge of the cover holds the pin down. Hold the rack toward the driven end of the pump housing. b) Remove the protective cap and felt washer (2).c) Install wrench (A) and remove retaining bushing (3).d) Remove seal (4).e) Install extractor (B) and lift the fuel injection pump out of the housing.
Do not attempt to remove the fuel injection pumps without the rack centering pin installed and the rack held toward the driven end of the pump housing.
f) Remove spacer (10). Keep the spacers and pumps together, and identified as to their location in the fuel injection pump housing.2. Disassemble the fuel injection pumps as follows: a) Remove bonnet (5), ring (8), spring (7), and check valve (6) from barrel (9).b) Remove plunger assembly (11), washer (12), and spring (13) from barrel (9).
While disassembling and assembling fuel injection pumps, exercise considerable care to prevent damage to plunger surfaces. The barrel and plunger assemblies are matched, and the individual parts are not interchangeable with other barrels or plunger assemblies.
3. Remove the rack centering pin cover, spring and pin.4. Remove the rack from the fuel injection pump housing. 5. Remove lifters (14). Keep the lifters identified and together with their respective pumps and spacers. 6. Remove the camshaft retaining bolt, lock and retaining plate (17).7. Remove spring (15) and gear assembly (18) from the camshaft. 8. Remove the fuel injection pump camshaft (19) from housing. 9. Using tool group (C), remove the camshaft bearings from the fuel injection pump housing.10. Remove two rack bearings (16) from the fuel injection pump housing.Assemble Fuel Injection Pump Housing
1. Using tool group (C), install the camshaft bearings in the fuel injection pump housing. Install the bearing in governor end of housing so that the oil hole in bearing is aligned with oil hole in housing. Install the two end camshaft bearings flush with their respective ends of fuel injection pump housing. 2. Using tool setup (D), install the two rack bearings in the fuel injection pump housing. Install the bearing in governor end of housing so that it will be recessed .195 .005 in. (4,95 0,13 mm) from face of housing. Install the rack bearing in accessory drive end of housing so that it will be flush with face of fuel injection pump housing.3. Lubricate the camshaft with clean SAE 30 engine oil. Install the camshaft in fuel injection pump housing. 4. Position governor drive gear (1) and spring (2) on the camshaft. Install camshaft retaining plate (3), bolt, and lock. 5. Install lifters (4) in their respective positions in housing. Lubricate the rack generously with clean SAE 30 engine oil. Install the rack in fuel injection pump housing with the slot in rack toward the driven end of