Technical characteristics of the gearbox (4-speed) (Sierra)

Manual transmission type A

Gearbox housing type A and B

The gearbox has three shafts, a classic design with four synchronized forward gears and a non-synchronized reverse gear. The gear shift lever is on the floor.

Three versions of a manual four-speed gearbox can be used in cars:

• type A gearbox in which the clutch housing forms a single unit with the gearbox housing;
• type B gearbox in which the clutch housing forms an integral part of or is bolted to the gearbox housing;
• type C gearbox in which the clutch housing is bolted to the gearbox housing.

Usage

Engine	1.3 dm³	1.6 dm³	1.6 dm³ economical	2.0 dm³
Gearbox type A	X	X
Type B gearbox		D		X
Gearbox Tips C	X	X	X

X – standard equipment;
D – additional equipment for a vehicle with a station wagon body.

Identification

Under one of the bolts securing the rear gearbox housing there is a plate on which the gearbox version designation is stamped.

Adjustment data

The axial clearance of the secondary shaft bearing in the rear gearbox housing must be zero; it is adjusted by the thickness of the thrust washer.

Gearboxes of type A and B

Thickness of the bearing thrust washers in the rear gearbox housing:

• 0.0679 – 0.0689 mm
• 0.0691 – 0.0701 mm
• 0.0703 – 0.0713 mm
• 0.0715 – 0.0724 mm
• 0.0725 – 0.0736 mm
• 0.0738 – 0.0748 mm
• 0.0750 – 0.0760 mm

Thickness of bearing thrust washers on secondary shaft:

• 0.059 – 0.061 mm
• 0.061 – 0.062 mm
• 0.062 – 0.064 mm
• 0.064 – 0.065 mm
• 0.065 – 0.067 mm

Thickness of thrust washers of bearing on primary shaft:

• 0.0504 – 0.0524 mm
• 0.0528 – 0.0548 mm
• 0.0552 – 0.0571 mm
• 0.0575 – 0.0591 mm

Gearbox type C

Thickness of the bearing thrust washers on the secondary shaft at the rear of the gearbox:

• 0.0726 – 0.0736 mm
• 0.0715 – 0.0725 mm
• 0.0703 – 0.0713 mm
• 0.0691 – 0.0701 mm
• 0.0676 – 0.0690 mm
• 0.0667 – 0.0675 mm
• 0.0655 – 0.0665 mm

Thickness of secondary shaft bearing thrust washers on secondary shaft:

• 0.0702 – 0.0712 mm
• 0.0714 – 0.0724 mm
• 0.0726 – 0.0736 mm
• 0.0738 – 0.0748 mm
• 0.0750 – 0.0760 mm
• 0.0762 – 0.0772 mm
• 0.0774 – 0.0784 mm
• 0.0786 – 0.0796 mm

Gear ratios

Broadcast	Gear ratio	Final drive ratio	Full gear ratio
Gearbox type A1
1	3,66	3,77	13,80
2	2,18		8,22
3	1,43		5,35
4	1,00		3,77
Reverse	4,24		15,95
Gearbox type A2
1	3,34	3,62	12,09
2	1,99		7,20
3	1,42		5,14
4	1,00		3,62
Reverse	3,87		14,01
Type B gearbox
1	3,65	3,38	12,34
2	1,97		6,66
3	1,37		4,63
4	1,00		3,38
Reverse	3,66		12,37

Gearbox type C

Broadcast	Gear ratio	Full gear ratio
		With the final drive gear ratio
		3,14	3,62	3,77	3,92
1	3,58	11,24	12,96	13,50	14,03
2	2,01	6,31	7,28	7,58	7,88
3	1,40	4,40	5,07	5,28	5,49
4	1,00	3,14	3,62	3,77	3,92
Reverse	3,32	10,42	12,02	12,52	13,01

Lubrication

Amount of oil
– gearbox type A	0.98 dm
– type B gearbox	1.46 dm³
– gearbox type C	1.25 dm³
Type	gear oil SAE 80 Ford SQM 2 C 9008 A

Tightening moments

Clutch housing to engine cylinder block	40 – 51 Nm
Clutch housing to front of gearbox housing	70 – 90 Nm
Cardan shaft to gearbox output shaft	57 – 67 Nm
Metal-rubber connector to the transmission suspension crossmember	16 – 20 Nm
Metal-rubber connector to gearbox housing	50 – 57 Nm
Crossbar to the body	20 – 25 Nm
Rear to front of gearbox housing	45 – 49 Nm
Cover for the front part of the gearbox housing
– gearboxes of type A and B	9 – 11 Nm
– gearbox type C	21 – 25 Nm