PUMP GP-FUEL TRANSFER 3313635 - Caterpillar

Body group (4) is under spring force. To prevent possible personal injury, carefully remove the body group from the apron sequence and relief valve.
1. Remove bolts (1) and body group (4) from apron sequence and relief valve body group (3).2. If necessary, remove plug (2) and make an inspection of the seal. 3. Remove seals (6) and stem (5) from body group (4). 4. Remove springs (9), shims (8), valve stem (7) and piston (10) from the apron sequence and relief valve body group. 5. Remove bolts (11) and body group (12) from the apron sequence and relief valve body group.6. If necessary, remove plug (13) and make an inspection of the seal. 7. Remove seals (14) and stem (15) from body group (12). 8. Remove bolts (17) and flange (16) from the apron sequence and relief valve body group. 9. Install a 1/4"-20 NC forged eyebolt (19) in plug (18) and remove it from the apron sequence and relief valve body group. 10. Remove spring (21) and valve (22) from the apron sequence and relief valve body group.11. Remove seal (20) from plug (18).12. Inspect the insert in the apron sequence and relief valve body group for wear or damage. If the insert has wear or damage, a replacement of the apron sequence and relief valve body group must be made.