2772879 ENGINE AR-COMPLETE Caterpillar parts
C7
Rating:
Alternative (cross code) number:
CA2772879
277-2879
2772879
CA2772879
277-2879
2772879
TRUCK ENGINE,
Compatible equipment models: 2772879:
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Information:
Start By:a. remove recoil springs and hydraulic track adjusters as a unit. 1. Remove cylinder (1) from front pilot (2).
The spring in the recoil spring assembly is assembled under a force of several tons. Do not put the recoil spring under compression or release the tension with the nut for the recoil spring bolt. Damaged threads on the recoil spring bolt or nut can cause the assembly to come apart and cause bodily injury.
(225B Shown)2. Disassemble the spring with tooling (A) as follows:a. Fasten a hoist to the spring. Position the spring between plates (3) and (4). Align the centers of pilots (2) and (7) with the centers of plates (3) and (4). Operate the hydraulic cylinder enough to hold the spring in place.b. Make an adjustment to nuts (5) so the distance between plates (3) and (4) is the same at each of the three legs (8).
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A).
c. Turn nuts (6) until there is 25.4 mm (1.0 in) between nuts (5) and plate (9). d. Put the spring under enough compression to remove nut (10). Remove the nut.e. Slowly release the compression on the spring.f. Turn nuts (6) and move plate (9) and the cylinder away from the spring. Put the spring under compression. Turn nuts (5) until they are 25.4 mm (1.0 in) from plate (9). Slowly release the compression on the spring.g. Follow the procedures in Steps 2e and 2f until the spring is no longer under compression. 3. Fasten a hoist to the spring. Remove spring (11), pilot (7), pilot (2), sleeve (12) and bolt (13) from tooling (A). The weight of the spring is 73 kg (160 lb).Assemble Recoil Springs
The spring in the recoil spring assembly is assembled under a force of several tons. Do not put the recoil spring under compression or release the tension with the nut for the recoil spring bolt. Damaged threads on the recoil spring bolt or nut can cause the assembly to come apart and cause bodily injury.
1. Assemble the recoil spring with tooling (A) as follows:a. Install pilot (2) into spring (11). Install bolt (13) in pilot (2). Install sleeve (12) onto the bolt.b. Fasten a hoist to the spring. Position the spring, pilot, bolt and sleeve between plates (3) and (4). Put pilot (7) between plate (3) and the end of the spring. Align the centers of pilots (7) and (2) with the centers of plates (3) and (4). Operate the hydraulic cylinder enough to keep the spring in place.
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A).
c. Make an adjustment to nuts (6) so the distance between plates (3) and (4) is the same at each of the three legs (8).d. Put the spring under compression. Make sure that bolt (13)
The spring in the recoil spring assembly is assembled under a force of several tons. Do not put the recoil spring under compression or release the tension with the nut for the recoil spring bolt. Damaged threads on the recoil spring bolt or nut can cause the assembly to come apart and cause bodily injury.
(225B Shown)2. Disassemble the spring with tooling (A) as follows:a. Fasten a hoist to the spring. Position the spring between plates (3) and (4). Align the centers of pilots (2) and (7) with the centers of plates (3) and (4). Operate the hydraulic cylinder enough to hold the spring in place.b. Make an adjustment to nuts (5) so the distance between plates (3) and (4) is the same at each of the three legs (8).
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A).
c. Turn nuts (6) until there is 25.4 mm (1.0 in) between nuts (5) and plate (9). d. Put the spring under enough compression to remove nut (10). Remove the nut.e. Slowly release the compression on the spring.f. Turn nuts (6) and move plate (9) and the cylinder away from the spring. Put the spring under compression. Turn nuts (5) until they are 25.4 mm (1.0 in) from plate (9). Slowly release the compression on the spring.g. Follow the procedures in Steps 2e and 2f until the spring is no longer under compression. 3. Fasten a hoist to the spring. Remove spring (11), pilot (7), pilot (2), sleeve (12) and bolt (13) from tooling (A). The weight of the spring is 73 kg (160 lb).Assemble Recoil Springs
The spring in the recoil spring assembly is assembled under a force of several tons. Do not put the recoil spring under compression or release the tension with the nut for the recoil spring bolt. Damaged threads on the recoil spring bolt or nut can cause the assembly to come apart and cause bodily injury.
1. Assemble the recoil spring with tooling (A) as follows:a. Install pilot (2) into spring (11). Install bolt (13) in pilot (2). Install sleeve (12) onto the bolt.b. Fasten a hoist to the spring. Position the spring, pilot, bolt and sleeve between plates (3) and (4). Put pilot (7) between plate (3) and the end of the spring. Align the centers of pilots (7) and (2) with the centers of plates (3) and (4). Operate the hydraulic cylinder enough to keep the spring in place.
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A).
c. Make an adjustment to nuts (6) so the distance between plates (3) and (4) is the same at each of the three legs (8).d. Put the spring under compression. Make sure that bolt (13)