Tightening Specifications

E30 Manual transmission



Transmission in General
1AZ Transmission to engine Hex screws
M8 25 Nm
M10 49 Nm
M12 74 Nm
Transmission to engine Torx bolts
M8 22 Nm
M10 43 Nm
M12 72 Nm
H transmission 73 Nm
2AZ Transmission to clutch housing
M12 76 Nm
3AZ Reinforcement plate to transmission
M8 23 Nm
4AZ Oil drain plug/filter plug 50 Nm
S65 560G 52 Nm


Case and Cover
1AZ Transmission housing, rear section/front section 22 Nm
2AZ Cover with guide tube/transmision case
M8x22 18 Nm
M8x30 25 Nm
M6 10 Nm
3AZ Bearing cape/sealing flange 10.5 Nm
4AZ reverse gear wheel axle to intermediate housing 49 Nm
5AZ Retaining plate for reverse gear wheel axle to intermediate housing 25 Nm
6AZ Reverse gear shaft to case
M8 25 Nm
S5D 310Z/SD5 320Z 20Nm
M10 45 Nm
7AZ Support for reverse gear shaft
240/260
M8 25 Nm
8AZ Bearing bracket on rear section of case
240/260/265/280
M6 10 Nm
9AZ Mounting tabs for sealing covers
280
M6 10 Nm
10AZ Bearing on countershaft
S5D 200G/S5D 250G
M10 90 Nm
S5D 310Z/S5D 320Z
M10 30 Nm
280
M10 60 Nm
11AZ Seal plug to rear housing section
M20 60 Nm
240
M16 40 Nm
260/280
M22 60Nm
12AZ Sealing caps to rear housing section
240/260/280
M6 10 Nm
13AZ Reversing bolt to reversing lever
ZFS-5-16/S5D 310Z/S5D 320Z 43 Nm
14AZ Clamping claws to rear case section
ZFS-5-16/S5D 310Z/S5D 320Z 33 Nm
15AZ Screws to detent plate
ZFS-5-16/S5D 310Z/S5D 320Z 9 Nm
16AZ Holder to transfer case
265/Sport
M6 9 Nm
17AZ Retaining plates for bearing on housing
S5D 310Z/S5D 320Z/S5D 200G/S5D 250G
M6 10 Nm
18AZ Retaining plate to housing
S5D 320Z/SMG
M6 5.5 Nm


Transmission Shafts
1AZ Output flange collar nut installed with bolt cement
All except S5D 390/S5D 280Z in E53
Pretension 190 Nm
NOTE: Then Release
Tighten down 120 Nm
2AZ Gear wheel to layshaft
265/Sport
M10 60 Nm
3AZ Output flange
S5D 390Z
Pretension 200 Nm
NOTE: Then Release
Tighten down 145 Nm
4AZ Output flange
S5D 280Z/S5D 320Z
Pretension 175 Nm
NOTE: Then Release
Tighten down 130 Nm


Interior Shift Components
1AZ Shift arms to transmission case
S5D 310Z 45 Nm
2AZ Sealing cap for locking sleeves of gearshift rods
S6S 420G
M6 10 Nm
3AZ Retaining screw, shift actuator/selector shaft
S5D 320Z/SMG
M6 6.8 Nm


External Gearshift Components
1AZ Actuating unit/actuator to transmission casing: Insert screws with screw securing adhesive
S6S 420G/SMG
M6 10 Nm
2AZ Switch for gear recognition to actuating unit
S6S 420G/SMG
M5 6 Nm
3AZHydraulic lines to actuating unit
S6S 420G/SMG
M1x1 17 Nm
4AZActuator to transmission casing
S6S 420G/SMG
M8 25 Nm
5AZ Reversing light switch
M12 18 Nm
6AZ Pressure accumulator to valve block
S5D 320Z/SMG 30 Nm
7AZ Protecting plate/expansion tank/shift actuator/hydraulic pump to transmission casing
S5D 320Z/SMG
M6 10 Nm
8AZ Protecting plate/valve block to transmission casing
S5D 320Z/SMG
M8 21 Nm
9AZ Valves to valve block
S5D 320Z/SMG
M4 3.5 Nm
10AZ Pressure sensor to valve block
S5D 320Z/SMG 15 Nm
11AZ Travel sensors to transmission casing
S5D 320Z/SMG
M4 2.8 Nm
12 AZ Retaining screw for hydraulic line
S5D 320Z/SMG 18 Nm
13AZ Banjo bolt for hydraulic line
S5D 320Z/SMG 16 Nm


Transmission mounts
1AZ Transmission mounts (rubber) to body
M10 42 Nm
2AZ Transmission cross member to body
M8 21 Nm
M10 42 Nm
3AZ Mount bracket to transmission
M8 21 Nm