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Some questions associated with fork seal replacements

 
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ljjohns
Flying Brick Rider


Joined: 21 Oct 2006
Posts: 263
Location: El Paso

PostPosted: Sat Jan 15, 2011 10:26 pm    Post subject: Some questions associated with fork seal replacements Reply with quote

Got a set of front forks from Sanjiv in good condition, though he reported that one of them had a seal leak. So today we first replaced seals on both of them and then installed them on the '95 LT. Typical problems with the circlip but patience prevailed. Also found that while Phil's K75 PVC junction was off-size as a tool for seating the seals on the K11, the outer case from a roll of plumber's teflon tape worked quite well, thank you.

My two questions are these:
(l) We were conservative in recharging the shock oil, only adding 360 ml instead of the full 400. What are the consequences, in the short term, of running 40 ml short? (We're using 10w--and drat is it hard to find fork oil in El Paso).
(2) When replacing the ABS sensor, we used the same spacers even though it was a different fork. We're not sure of the reading we got on when we checked the gap. But the ABS lights cleared. Will an errant gap on the front sensor show up as an ABS fault, or are we good because the ABS test passed?

Thanks
Larry Johnson
El Paso, TX
_________________
1993 K1100LT (Washington)
1995 K1100LTSE
1996 K1100LTSE (parts)
2003 K1200LTC
1991 K75RT
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA

PostPosted: Sat Jan 15, 2011 10:40 pm    Post subject: Reply with quote

1) It's going to be pretty soft when low on fork oil. Better too little than too much though.

2) If the ABS initializes OK when you move then you should be OK.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
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ljjohns
Flying Brick Rider


Joined: 21 Oct 2006
Posts: 263
Location: El Paso

PostPosted: Sat Jan 15, 2011 10:52 pm    Post subject: Reply with quote

Thanks, Drake.

We've got a syringe and will add more, probably in 20 ml increments. But the 10w will provide some compensation.

Larry Johnson
El Paso, TX
_________________
1993 K1100LT (Washington)
1995 K1100LTSE
1996 K1100LTSE (parts)
2003 K1200LTC
1991 K75RT
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA

PostPosted: Sat Jan 15, 2011 11:02 pm    Post subject: Reply with quote

ljjohns wrote:
Thanks, Drake.

We've got a syringe and will add more, probably in 20 ml increments. But the 10w will provide some compensation.

Larry Johnson
El Paso, TX


FWIW: I use red Honda 10W at the factory levels on my LT with stock springs and all is well. The RS has some aftermarket (Race Tech I believe) springs and acts like a pogo stick on the freeway if filled to factory quantities but rides fine with 10ml less.

Fork oil weights between manufacturers tend to vary a little between brands - at least that's what I've read in a few places on The Internet.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
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Phil Marvin
Rider in the Sky


Joined: 03 Apr 2003
Posts: 1389
Location: El Paso, Texas, USA

PostPosted: Sun Jan 16, 2011 11:35 am    Post subject: Reply with quote

Hi, Larry,
I have a few quarts of the BMW 7.5 wt. fork oil. If you'd like a quart, let me know. I'll be home for a couple of days on Thursday.
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Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP
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ljjohns
Flying Brick Rider


Joined: 21 Oct 2006
Posts: 263
Location: El Paso

PostPosted: Sun Jan 16, 2011 12:14 pm    Post subject: Reply with quote

Thanks, Phil. We're good with the 10W and next time I do a seal replacement I'll order the fork oil ahead of time. We're making great progress on the '95, replacing the front brake pads while we were in there. I think there's still a little misalignment of the fairing due to a drop by one of the earlier PO's, but we're not going to worry about that until we next have to take off the fairing.

Still staring at the '96 and plotting. I'm now thinking that the residue around the forks and on tire/wheel is from the front brake lines (which the PO had removed, along with the master cylinder). So there are two major elements on that bike: all of the innards for the gas tank and the front brakes. But that will probably be a project for later in the spring.

Be safe at the mines and on the way home.

Larry
_________________
1993 K1100LT (Washington)
1995 K1100LTSE
1996 K1100LTSE (parts)
2003 K1200LTC
1991 K75RT
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