I was just Googling "low drag calipers" when I came across this bulletin from Allied Signal (Bendix) which might be relevant to the OP.
In the bulletin they state:
and
If somewhere along the line the OP's calipers were replaced and the replacements aren't correct (e.g., a mix of low-drag and no-drag) it may be a source of problems.
Maybe Schurkey or others can comment on whether this concern is relevant to the GMT400s.
Interesting info on low-drag calipers and MCs is given, here.
In the bulletin they state:
"Most loaded caliper remanufacturers do not
differentiate between Low-Drag and conventional,
listing just one model to cover many
years of applications."
differentiate between Low-Drag and conventional,
listing just one model to cover many
years of applications."
and
''Combining a conventional caliper on one
side with a Low-Drag caliper on the other can
lead to uneven braking, regardless of the type
of master cylinder on the vehicle."
side with a Low-Drag caliper on the other can
lead to uneven braking, regardless of the type
of master cylinder on the vehicle."
If somewhere along the line the OP's calipers were replaced and the replacements aren't correct (e.g., a mix of low-drag and no-drag) it may be a source of problems.
Maybe Schurkey or others can comment on whether this concern is relevant to the GMT400s.
Interesting info on low-drag calipers and MCs is given, here.
Technical - GM metric low drag calipers *FIXED*
So, I have the GM metric calipers on the front end with the 70’s Ford type master cylinder. I’m always having to pump the brakes one time to get a good...
www.jalopyjournal.com
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