Question about Isuzu Trooper

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Dipstick guide gets bend while torquing

I am facing problem in dipstick guide, while torquing nut of dipstick guide to the adaptor which is fixed in engine block, dipstick guide get stressed in one direction & lower portion which is in contact to nut gets rotate with nut. My torque value is 18 Nm.

My investigations:
1. Nut thread length 12.5mm, 10 full threads, Nut length 14mm
2. Adaptor thread length 14 full threads.
3. Dipstick guide diameter 9mm.

I am facing this problem for last one year & lots of wastage is theredue to failure.

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Never mind reading the book and working to it ,you are obviously doing it wrong by over tightening it when re-building engines or anything mechanical you work by feel,knowing the metals used and what stress and vibration levels they have to withstand.just tighten it with a small spanner and dont be so heavy handed, firm pull and thats it

Posted on Nov 21, 2008


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