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[Datsun 1200 encyclopedia]

Hydraulic clutch

(Difference between revisions)

Datsun 1200 encyclopedia | Recent changes | Switch to MediaWiki mode

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Categories: Clutch | Drivetrain Modifications

Revision as of 07:38, 30 June 2007
Ddgonzal (Talk | contribs)
(->Pedal Linkage)
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Revision as of 07:45, 30 June 2007
Ddgonzal (Talk | contribs)

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This is for the 71-73 1200. The B210 (120Y) measurements are different. 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 ==+=== Clutch Slave Cylinder ===
Adjust the free play to 5/32". Adjust the free play to 5/32".
Line 53: Line 56:
* 30613-27260 0.5 mm * 30613-27260 0.5 mm
-= Removable, Replacement and Bleeding =+== Removable, Replacement and Bleeding ==
If the Master Cylinder runs dry, or when replacing it, be sure to bleed the Master Cylinder separately. If the Master Cylinder runs dry, or when replacing it, be sure to bleed the Master Cylinder separately.

Revision as of 07:45, 30 June 2007

Left-hand-drive (LHD) versions of the Datsun 1200 used a hydraulic clutch system. It is very nice, with a light, linear action.

537.JPG

  • Extremely light clutch pedal effort, but with good feedback.


Contents

Parts

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


MASTER

  • 30610-24900 (superceded by 30610-24910). $111 USD


SLAVE
4652.jpg

  • Left: 30620-H1601 (superceded by 30620-H1600) $59 USD
  • Right: 30620-H1600


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 to low and bolts right up


Adjustment

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

  1. Adjust slave cylinder free play
  2. Adjust pedal pad height without stopper
  3. Adjust pedal stopper

Clutch Slave Cylinder

Adjust the free play to 5/32".

539.jpg


Pedal Linkage

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

538.JPG

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.


CL-06_CL15_th.JPG

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.


RHD Hydraulic Conversion

Hydraulic Clutch Master
4859.jpg9524.jpg

  • Girling "claypipe" master cylinder, available in 5/8" and 3/4" bores (about $70 AUD). Threads are 3/8 unc for pipe outlet and 7/16 unc for fluid in


1851.jpg

  • Nissan Urvan remote-fill tops
  • A simple 90-degree bracket is needed to be made up to mount this master cylinder


Nissan Sentra Clutch Master Cylinder
9524.jpg

  • Fluid reservoir is connected to the cylinder via a rubber hose.

Remote Clutch Master Cylinder

A remote clutch cylinder may also be useful

  • 7656.jpg
  • 4859.jpg


Photo Index

Click each pic for large photo and discussion.

7656.jpg

  • Cable-to-Hydraulic custom remote clutch m/c found on Mitsubishi LA Lancer


9470.jpg 10824.jpg

540.jpg 541.jpg1153.jpg 1851.jpg2230.jpg 4859.jpg 7477.jpg 7499.jpg 7510.jpg 7741.jpg 7742.jpg 9387.jpg 9470.jpg 9524.jpg 9526.jpg 9668.jpg