vacuum modulator o-ring

Clutch, transmission, rear axle

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Whateverman
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Joined: Sat Jan 08, 2011 6:45 pm
Location: Comox Valley B.C. Canada

vacuum modulator o-ring

Post by Whateverman »

so i got a new vacuum modulator for the c4 in the ol'pig (push-in) a few months ago and of course upon opening the box up this weekend its missing the stinkin o-ring
so my question is : is this o-ring made of some special kind of material or can i get away with just going and grabbing whatever they have that fits out of the o-ring assortment at the parts store ? any idea what size i need?
i'd just order a new modulator but it took almost 3weeks for the last one to arrive and blah blah blah

thanx
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
Donnie
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Joined: Sat Jul 30, 2011 12:22 pm

Re: vacuum modulator o-ring

Post by Donnie »

Just take your modulator to the parts store & choose one that fills the groove width wise & has .005 to .008 protruding above the surface..
There is not a lot of oel pressure there & there is no movement at all... You will be fine.... lube it before installing.........Donnie :thup:
Whateverman
Blue Oval Guru
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Posts: 1257
Joined: Sat Jan 08, 2011 6:45 pm
Location: Comox Valley B.C. Canada

Re: vacuum modulator o-ring

Post by Whateverman »

thanx --so plain ole whatever they got is good enuf? sweet. :thup:
and yeah i was planning on bringin it with me
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
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