B: D-Style Collection Head Maintenance - Welker INLOOP ACE Installation, Operation And Maintenance Manual

1. Loosen the jam nut and unscrew the collection head assembly from the flange.
2. Unscrew the piston from the insertion shaft to expose the internal sand relief. If wrenches are needed, place the
wrenches on the wrench flats.
Internal Sand Relief
3. Examine the seat of the internal sand relief for damage or wear. Replace as necessary.
4. As necessary, replace the O-rings on the seat of the internal sand relief.
5. Examine the spring of the internal sand relief for damage or wear. Replace as necessary.
6. Examine the poppet of the internal sand relief for damage or wear. Replace as necessary.
Piston and Cylinder
7. Inspect the bushing for signs of wear. Replace as necessary.
8. Replace the O-ring, back up, and PolyPak® on the piston.
9. Inspect the nickel-plated cylinder for scratches or other damage. Polish or replace as necessary.
10. Unscrew the cylinder base and relief cap from the cylinder.
11. Replace the O-ring on the cylinder.
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IOM-195 MODEL: INLOOP™ ACE
APPENDIX B: D-STYLE COLLECTION HEAD MAINTENANCE
Figure B1: D-Style Collection Head With Sand Reliefs
REV: B 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331