timing belt tensioner.. .. doh.!!
#1
Scooby Regular
Thread Starter
Join Date: May 2003
Location: ireland
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
Am I the only one who incorrectly compressed the hydraulic tensioner for the timing belt (96 WRX). I know NOW after doing it that it should be compressed vertically.
I compressed it slowly, it's back on the engine now with new belt and 'seems' ok. (engine hasn't been run yet,out of car at present)
My questions are:
What is the reason these cylinders must be compressed vertically, any experts on hydraulics out there?.
If this hasn't caused internal damage, will I get away with removing, compressing again verically, refitting?
I compressed it slowly, it's back on the engine now with new belt and 'seems' ok. (engine hasn't been run yet,out of car at present)
My questions are:
What is the reason these cylinders must be compressed vertically, any experts on hydraulics out there?.
If this hasn't caused internal damage, will I get away with removing, compressing again verically, refitting?
#3
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
The subaru manual has details of how to compress it, vertically like you say, and also there is an inspection procedure, including a pressure underwhich it shouldn't move..
I'll email you a copy..
JGM
PS: You have mail once I have written it.
I'll email you a copy..
JGM
PS: You have mail once I have written it.
#5
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
In actual fact the website I got a copy from is current UP..
Linked from here in the Subaru section under workshop manuals..
site
All that said would it not just be piece of mind to replace it?
JGM
Linked from here in the Subaru section under workshop manuals..
site
All that said would it not just be piece of mind to replace it?
JGM
#6
Scooby Regular
Thread Starter
Join Date: May 2003
Location: ireland
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
Cheers JGM,
wish I had that info before I changed the belt!. Probably best to replace it alright. I was just curious as to why these cylinders shouldn't be compressed horizontally
#7
Many specialist's keep these instock & make recommendations over replacing them; though some will replace.
At or near the £125 plus vat mark, I tend to make a recommendation....
At or near the £125 plus vat mark, I tend to make a recommendation....
Trending Topics
#8
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
I was just curious as to why these cylinders shouldn't be compressed horizontally
Buy a replacement and cut the old one open to see?!
JGM
#10
The tensioner is recommended to be compressed bertically, so as to "prevent" and passage of the oil fluid from passing down the side of the oil seals, thus loosing pressure when re compressing in a "vice" SIDEWAYS.
They have been "known" to fail by doing this, so best to re compress vertically.
The other way to check, is if there is a visible oil film on the top of the seal on top of the tensioner piston, best to replace it now before it fails, as this is the early warning of oil pressure loss, followed by a very loud mechncal "knock" noise when starting up, normally from cold.
So there you go chaps and chap esses. now you know.
They have been "known" to fail by doing this, so best to re compress vertically.
The other way to check, is if there is a visible oil film on the top of the seal on top of the tensioner piston, best to replace it now before it fails, as this is the early warning of oil pressure loss, followed by a very loud mechncal "knock" noise when starting up, normally from cold.
So there you go chaps and chap esses. now you know.
Thread
Thread Starter
Forum
Replies
Last Post