I am trying to help a guy out with re torquing the head bolts at the 600 mile service. I have the torque values and the procedure info but I can't find a diagram I used to have showing the location of the M 10 screw - it is down near the cam chain - would like to show a picture or diagram if anyone has one.
The procedure is fairly simple and straight forward:
From the service manual:
"After 1000 KM (600 miles), tighten cylinder head nuts in diagonally opposite sequence:" (cross pattern)
1. Slacken one nut
2. Tighten nut to initial torque - 20 Nm
3. Tighten nut to wrench angle - 180 degrees
4. Slacken and re tighten M 10 screw - 40 Nm
I am looking for a picture or diagram of M 10 - is difficult to explain where it is - is in plain sight near the cam chain wheel.
Re Torquing Head bolts - 600 mile service
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Re Torquing Head bolts - 600 mile service
Bill Haycock - Member #78
Huntsville, AL
Huntsville, AL
Bill, Here's what I have from the Clymer manual:
Loosen each cylinder nut (A, Figure 115) 1/4 turn maximum-do not loosen the nuts any more than that specified as it will place undue strain on the valve train.
Using a criss-cross pattern, tighten the cylinder head mounting nuts (Figure 116) to the preliminary torquer of 20 Nm (15 ft-lb)
Attach a degree wheel (Figure 117) to the wrench and tighten the nuts an additional 180 degrees.
Loosen the 10mm Torx bolt (B-Figure 115) 1/4 turn, then tighten the bolt to 40Nm (29 ft lb)
I have attached a picture of the figure 115 showing the location of that Torx bolt. I'm assuming this (B) is the M10 bolt you're talking about.
http://r1150r.smugmug.com/photos/49153212-M.jpg
Loosen each cylinder nut (A, Figure 115) 1/4 turn maximum-do not loosen the nuts any more than that specified as it will place undue strain on the valve train.
Using a criss-cross pattern, tighten the cylinder head mounting nuts (Figure 116) to the preliminary torquer of 20 Nm (15 ft-lb)
Attach a degree wheel (Figure 117) to the wrench and tighten the nuts an additional 180 degrees.
Loosen the 10mm Torx bolt (B-Figure 115) 1/4 turn, then tighten the bolt to 40Nm (29 ft lb)
I have attached a picture of the figure 115 showing the location of that Torx bolt. I'm assuming this (B) is the M10 bolt you're talking about.
http://r1150r.smugmug.com/photos/49153212-M.jpg
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Paul Mihalka
- Basic User
- Posts: 201
- Joined: Fri Mar 25, 2005 8:45 pm
- Location: Maryland
Close enough for me...Fantastic Phil!!! That is exactly what I needed - i was having a hard time explaining to this fellow where M 10 was!! Very clear now.
BTW, a BMW mechanic told me one doesn't really have to have a degree wheel - just place the wrench at 12 O'Clock and swing it down to 6 O'Clock - same result! I guess - I always had the 600 mile check down at the shop - all other work I do!
BTW, a BMW mechanic told me one doesn't really have to have a degree wheel - just place the wrench at 12 O'Clock and swing it down to 6 O'Clock - same result! I guess - I always had the 600 mile check down at the shop - all other work I do!
Bill Haycock - Member #78
Huntsville, AL
Huntsville, AL
