Revision as of 06:16, 5 May 2011

Left-hand-drive (LHD) versions of the Datsun 1200 used a hydraulic clutch system. It is very nice, with a light, linear action. Stock pedal force is 10.8 kg (23.8 lb), a bit higher than the RHD mechnical clutch at 8.3 kg (18.3 lb). The slave cylinder diameter is 3/4 inch and the master cylinder is 5/8 inch.

Extremely light clutch pedal effort, but with good feedback.

1 Adjustment
- 1.1 Clutch Slave Cylinder
- 1.2 Pedal Linkage
2 Removable, Replacement and Bleeding
3 Part Numbers
4 RHD Hydraulic Conversion
5 Remote Clutch Master Cylinder
6 Photo Index

Adjustment

This is for the 71-73 1200. The B210 (120Y) measurements are different.

Adjust slave cylinder free play
Adjust pedal pad height without stopper
Adjust pedal stopper

Clutch Slave Cylinder

Stock clutch slave cylinder diameter is 3/4 inch.

Adjust the free play to 5/32".

Pedal Linkage

Before adjusting the pedal linkage, first adjust the clutch release arm under the car.

The specs are:

Pedal height: 5.57 in (141.5 mm)
Pedal free play: 1.181 in (30 mm)
Pedal stroke is 5.65 in (143.5 mm) with the adjustment stop (the switch in the diagram) backed off. Adjustment is made with shims for the cylinder on the firewall.

Adusting Shim

30611-27260 1.6 mm
30612-27260 0.8 mm
30613-27260 0.5 mm

Removable, Replacement and Bleeding

If the Master Cylinder runs dry, or when replacing it, be sure to bleed the Master Cylinder separately.

Remove the pipe & place a thumb over it for the return stroke of the pedal to prevent ingestion of air. Once the Master Cylinder is free of air you can bleed the whole system with confidence.

Part Numbers

Stock USA cylinders. "Repair Kits" are also available. These include all new rubber parts, and can be used if the aluminum body is not pitted. The bore is hand-honed. Often with aluminum a kit will leak, so we recommend a new unit rather than a kit. Cast-iron cylinders may have better success.

Master Cylinder

Clutch Master Cylinder - 5/8"

30610-24900 ASSY-CYLINDER CLUTCH MASTER (5/8" NABCO)

http://www.rockauto.com

30610-24900 (superceded by 30610-24910). $111 USD
RHINO PAC M0600 $35.79

Slave Cylinder

Clutch Slave Cylinder - 3/4"

30620-H1600 ASSY-CYLINDER CLUTCH OPERATING

Left: Original Style 30620-H1601 (superceded by 30620-H1600) $59 USD
Right: Replacement Style 30620-H1600

Clutch Slave Cylinder

RAYBESTOS SC37495 $12.44
ACDELCO 18F19 $14.56
RHINO PAC S0600 $15.92

B210

Clutch Master Cylinder: 5/8 inch
Clutch Slave Cylinder: 11/16 inch

Comparo: B110 and B210 are both 5/8" Master Cylinders

Beck Arnley part number 072-6489

620 Pickup from 1972-3/76
B210 (all models) from 1974-4/75
SPL-311 (1600 or 2000) from 1966-70
510 from 1968-73 (with Nabco master cylinder)
610 from 1973-75 (with Nabco master cylinder)
710 from 1973-75

Beck Arnley part 072-6521

74-75 B210
76 F10
72-76
620 pickup
66-70 SPL-311 1600
68-70 SPL-311 2000
75-78 280Z
69-73 510
78-81 510
73-76 610
74-77 710
77-81 810

HYDRAULIC HOSE

The hose is difficult to find in USA, except on eBay. Alternatives: lot of the brake hoses from cars with a solid rear axel will work also:

Beck/Arnley 073-0879 (rear brake hose)
BRAKEWARE #77001 $12 at Autozone. It's about 1.5-2 inches longer then the original, does not hang too low and bolts right up