Engine - Nuts and Bolts Usage Information

90jaguar04
SECTION: 12
ENGINE NUTS/BOLTS No: 21


Model: 3.6, 4.0 SEDAN Date: JULY, 1990

KEY POINTS: DO NOT REUSE NUTS/BOLTS

3.6 and 4.0 sedan liter engines incorporate the "SPS" joint control system for nuts and bolts used in the following applications:

Crankshaft main bearing cap bolts Connecting rod end cap bolts and nuts Cylinder head hold down bolts

All of the above mentioned nuts and bolts should only be used once. They should be discarded after disassembly and replaced with new nuts and bolts upon reassembly.

Tightening Torque specifications (supersedes repair manual):

^ Crankshaft main bearing cap bolts - 136 to 142 N-m (100 to 105 ft.lbs.)

^ Connecting rod end cap bolts and nuts - 52 to 55 N-m (38.5 to 40.5 ft.lbs.)

^ Cylinder head hold down bolts - 59 to 61 N-m (43.5 to 45 ft.lbs.) plus exactly 90 degrees (+/- 0 degrees)


NOTE: Only the cylinder head "hold down" bolts should be tightened an additional 90 degrees, using tool LST 122.


The crankshaft main bearing bolts and connecting rod end cap bolts and nuts MUST NOT be tightened beyond the specification torque.


PARTS INFORMATION:

Description: Part Number:

Main bearing cap bolt (14 req'd) EAC 4119
Connecting rod end cap bolt (12 req'd) EAC 1027
Connecting rod end cap nut (12 req'd) EAC 5541
Cylinder head hold down bolt (14 req'd) EBC 1771