TITLE:
NO.:
KEROTEST MODEL-1
REV.: E
GATE VALVE BONNET LEAK
DATE: 7/12/07
REPAIR PROCEDURE
PAGE: 10 OF 13
This report is the property of Kerotest Manufacturing Corp. 5500 Second Avenue, Pittsburgh, PA 15207 and may not be
copied by any means without the expressed written consent of Kerotest. It is intended for the sole purpose of helping
Kerotest customers evaluate Kerotest products and may not be released to any third party or otherwise used in any
manner injurious to the interests of Kerotest.
ENCLOSURE 3
MODEL-1 – 1" BOLT REPLACEMENT FIXTURE
FOR FIELD SERVICE REPAIR
(REFER TO SKETCH ON NEXT PAGE)
1. Backseat the valve using 50 ft-lbs. of torque.
2. Carefully remove operating square. A gear puller device allows for easy removal –
Caution: Before proceeding with operating square removal insure gland plate is
securely fastened to valve.
3. Screw threaded bushing on top of stem.
4. Locate bottom clamp on valve and install top clamp "A" – secure.
5. Remove gland and bolt to underside of top clamp "A" – 1/4" – 20 x 1-3/4 hex cap screw
with nut – optional
6. Slip middle clamp "B" between flanged nuts and around stem – secure
Note: Clamp "A" can be kept in place if enough working room is available.
7. Remove broken bolts one (1) at a time and replace with new hardware.
Note: Use hardened drill bushing to guide 3/36" or 1/8" drills – for (easy out) – (air drill)
8. Replace all other bolts and torque to assembly procedure.
9. Remove clamp "B" and replace gland.
10. Remove threaded bushing and replace actuator.
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