Tue, 31 Mar 1998 13:25:28 +0100 - Message No. 2463
From: Sheridan Coulter

Subject: FW: strange noises



Sheridan Coulter
Technical Project Leader

-----Original Message-----
From:	Sheridan Coulter 
Sent:	Tuesday, March 31, 1998 11:29 AM
To:	'Holger Blumentritt'
Subject:	RE: (XRV) strange noises

Hi thanks for the reply, the bike Has done 24k Miles, about 38k KM it is
definitely the cam-chain as the noise disappears above 3k RPM. I have
been told that the tensioners can stick on these bikes, so I took the
cover off last night for a look, it was a bit tight but not seized, so I
freed it off a bit, it was too late to start the bike up last night.
(neighbours just had new baby) so I'll try tonight to see how it goes,
hopefully that will fix my problem. I'll let you know tomorrow.

Sheridan Coulter
Technical Project Leader

	-----Original Message-----
	From:	Holger Blumentritt
[SMTP:elchqcii@linux.zrz.TU-Berlin.DE]
	Sent:	Tuesday, March 31, 1998 6:44 PM
	To:	Sheridan Coulter
	Cc:	xrv@normans.isd.uni-stuttgart.de
	Subject:	Re: (XRV) strange noises

	Hi Sheridan,
	just came back from vacancies and hope my advice will get you in
time. I think there 
	are three sources for the noise and therefore three
opportunities to cope with, two 
	cheap and one expensive. but first you have to start the engine
again and rev it up:
	1. the noise becomes less - then its the camchain itself,
possible in an '89 model 
	with about 100-150 tkm, you didn't give a hint about your
mileage. the @ has 
	automatic tensioners which you can't see from the top, but they
are for sure not the 
	problem (ok,ok the only sure thing in life is death...)
	2. the noise becomes more, the frequency gets higher - two
possibilities:
	2.1. the easy way, you gave to much valve clearance; check again
and adjust more to 
	the thight side.
	2.2. the hevy and expensive way, and as it seems to me after
your description the 
	most probable reason: when rebuilding the camcover you have to
take care for the 
	little oilcanal inside for the cam bearings. fitting them not
exactly or not 
	absolutly clean it will cause a cam bearing damage on the first
run after a few 
	minutes or seconds, hell knows. so if the noise starts a little
later after 
	rebuilding, that's the cause...but always look on the bright
side of life-h.
	ps: always provided, that you gave the right torque to the
screws!!!

dipper@normans.isd.uni-stuttgart.de