Reinforce vehicle frame in area of crossmembers

AR31.30-W-0035-03A	Reinforce vehicle frame in area of crossmembers
	Notes on reinforcing vehicle frame	AH31.30-N-0007-01A
	Notes on drilling side rails	AH31.30-N-0003-01A

 Frame

Number	Designation				Model 374.5/6	Model 374.4, 375.1, 958.0, 970, 972, 974, 975, 976	Model 375.3, 950, 952, 953, 954, 958.2


BA31.30-N-1002-01A	Bolt, frame sections to frame	M101.5		Nm	-	80	-
		M121.5		Nm	95	95	95
		M141.5	Stage 1	Nm	150	150	150
			Stage 2	°	90	90	90
		M161.5	Stage 1	Nm	225	225	225
			Stage 2	°	90	90	90
		M181.5	Stage 1	Nm	330	330	330
			Stage 2	°	90	90	90

 Frame

Number	Designation				Model 375.4, 940, 942, 943, 944, 958.4	Model 930, 932, 933, 934	Model 957


BA31.30-N-1002-01A	Bolt, frame sections to frame	M101.5		Nm	-	-	-
		M121.5		Nm	95	95	95
		M141.5	Stage 1	Nm	150	150	150
			Stage 2	°	90	90	90
		M161.5	Stage 1	Nm	225	225	225
			Stage 2	°	90	90	90
		M181.5	Stage 1	Nm	330	330	330
			Stage 2	°	90	90	90

W31.30-0066-01

 If reinforcements are attached in the area of the frame crossmembers, the frame crossmembers must be shortened accordingly. End crossmembers are cut through on the left and right and welded together again. All the other frame crossmembers are cut through in the center, shortened accordingly and welded together again. Welded frame crossmembers should be reinforced.

1 Unrivet frame crossmember (2) and unscrew bolts (1).

 The rivets are replaced by flange bolts M16 (10.9).

W31.30-0067-01

2 Lay reinforcements (3) in the vehicle frame, insert new or shortened frame crossmember (2).

3 Install reinforcements (3) and frame crossmember (2) on the longitudinal frame member.

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