Now that I got the turbo out and sent off for overhaul (@ 210K SM), I'm studying the reverse procedure and I end up confused; Haynes, Chilton and 700Faq are all stating different torque specs on turbo to manifold...
Does anyone have the real deal here? This is a 230FT with Mitsu TD05 turbo.
Chiltons: 1) 10Nm 2)41Nm 3)120 deg. more
Haynes: 1) 1Nm 2)45Nm 3) 45 deg. more
700 FAq: Tighten to 30 Nm (22 ft-lb) in a 1-4-2-3 pattern starting with the top rear as "1" and then going clockwise around the nuts ending at the bottom rear.

What does the Volvo Maint. Spec say? Anyone?

Secondary question: Does the oil return pipe have an o-ring in addition to the rubber gasket (into the oil pan)?

thx

This is from the Service Manual (TP 31003/1) for B200, B230 engines, 740/760, 1985-19.., page 28.

Step L20 "Torque bolts as follows"

Tighten in following sequence (per illustration) and in three stages:
I 1 Nm (9 in lb)
II 45 Nm (33 ft lbs)
III = 45° in one motion

Looks like Haynes wins. The Bentley 240 manual also has these same specs.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.

Thanks a million lucid