Well i needed to pressure test my drive so i built a very simple, easy to assemble pressure tester yesterday. i purchased everything from home depot.
1. gas pressure tester 0-15 psi sku# 459718 $ 9.87
2. 1/2" x 3/4" brass mnpt reducer sku# 605039 $4.21
3. 3/8 x 2" hex bolt $ .34
4. clear tubing i had in garage $ 0
5. 2 small hose clamps i had in garage $ 0
6. teflon tape i had in the garage $ 0
7. flat washer and flat rubber washer already on hand $ 0
i wrapped the reducer threads with the teflon tape and then installed it into the psi gauge. I then used the tubing and hose clamps to attach them to the gauge and 3/8 bolt. to make the adapter for the vent hole threads i center drilled the 3/8-16 hex bolt and then cut it to length. I then soldiered a 3/8 nut onto the bolt. I then secured the open end of the tubing to the bolt and installed a washer and flat rubber washer to seal against the gear housing to prevent leaks at the vent hole threads. On both ends of the tubing i used plumbers goop and small hose clamps. i used the goop to help seal and so i wouldn't have to tighten the hose clamps so much that the threads would cut into the plastic tubing causing a leak.
the psi gauge already has a built in shrader valve so it holds the air automatically. the picture of the gauge that is silver is just for a closer look and the real gauge is brass.
1. gas pressure tester 0-15 psi sku# 459718 $ 9.87
2. 1/2" x 3/4" brass mnpt reducer sku# 605039 $4.21
3. 3/8 x 2" hex bolt $ .34
4. clear tubing i had in garage $ 0
5. 2 small hose clamps i had in garage $ 0
6. teflon tape i had in the garage $ 0
7. flat washer and flat rubber washer already on hand $ 0
i wrapped the reducer threads with the teflon tape and then installed it into the psi gauge. I then used the tubing and hose clamps to attach them to the gauge and 3/8 bolt. to make the adapter for the vent hole threads i center drilled the 3/8-16 hex bolt and then cut it to length. I then soldiered a 3/8 nut onto the bolt. I then secured the open end of the tubing to the bolt and installed a washer and flat rubber washer to seal against the gear housing to prevent leaks at the vent hole threads. On both ends of the tubing i used plumbers goop and small hose clamps. i used the goop to help seal and so i wouldn't have to tighten the hose clamps so much that the threads would cut into the plastic tubing causing a leak.
the psi gauge already has a built in shrader valve so it holds the air automatically. the picture of the gauge that is silver is just for a closer look and the real gauge is brass.
