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[Datsun 1200 encyclopedia]

Release Bearing

From Datsun 1200 Club

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Categories: Clutch | Transmission

The clutch Release Bearing is often called the throwout bearing or thrust bearing and is operated by the clutch Release Lever.

Contents

Overview

RHD and LHD use the same Bearing and spring. B110, B120, B210, B310 all use the same bearing regardless of engine or transmission type.

1. Release Lever differs RHD vs LHD
2. Spring
3. Release Bearing
TM-04_TM9.jpg

Specifications

release bearing
* Bore  1.5748" 39.314 mm
* O.D.  2.8898" 73.401 mm
* Width 0.752"  19.10 mm

26855.jpgAlbum click to view

Part Numbers

30502-21000 BEARING-CLUTCH RELEASE
Aftermarket
* SKF N2106,N3048 $32 O'Reilly Auto
* BCA/National 01576 $21.89
* Timken DNB01576C $22 rockauto.com
* Sachs SB770 $22
* Koyo W0133-1633227 amazon.com

Interchange

The bearing was originally designed for the Datsun 510 model series (part code 210), so fits many Datsuns, basically most RWD model with A-series, L-series, Z-series, KA-series or VG-series engines.

* 1971-1973 Datsun 1200 
* 1974-1978 B210 
* 1979-1982 B310
* 1977-1988 200SX 
* 1989-1990 240SX 
* 1994-1998 240SX 
* 1975-1979 620 Pickup
* 1980-1986 720 Pickup L20B,Z-series
* 1986-1994 D21 Pickup
* 1995 Nissan Pickup
* 1987-1996 Pathfinder
* 1974-1977 710
* 1974-1976 Datsun 610
* 1977-1981 810 L24E, LD28
* 1970-1978 240Z, 260Z, 280Z
* 1979-1983 280ZX 
* 1984-1989 300ZX VG30
* 1982-1984 Maxima 
* 1978-1981 510 
* 1987-1988 Nissan Van


Most Datsun 510 use a different bearing than the A-series type. Only the small-clutch 510 used the same bearing as Datsun 1200.
510 JDM Usage - BEARING-clutch release
30502-21000 1967-1970 L13 510 Sedan $43.77 USD
* 30210-21000 clutch cover
* 180mm clutch
30502-14601 1967-1970 L13 Van & Wagon
* 30210-23000 clutch cover
* 200mm clutch
30502-13200 1967-1970 L13 P,Y (LPG or gasoline taxi)
* superseded by 30502-32200 $45.03 USD
* 30209-10601 coil spring clutch cover
510 USA usage
30502-14601 L16 $49.62 USD
* for 200mm clutch
* 1.303" Bore 
Roadster USA
30502-14600 R16 NLA

Bearing Sleeve

Datsun 1200 used two different length sleeves: 1) standard length for 56L transmission, and 2) short length for 56A tranmission. The difference in length is 4.5mm.

SLEEVE-CLUTCH RELEASE 
* 30501-H1000 standard/original <> 30510-H7500
* 30501-H5000 short type

30501-H1000.jpg

Usage 30501-H1000 (standard length) 
* B110 except 5-speed
* B120 LB, B120 SB -7308
Usage 30501-H5000 (short length)
* B110 5-speed (56A)
* B120 SB 7309-

Original B110 vs B110 short type
24653.jpgAlbum click to view

POST Clutch Problems

When swapping transmissions and engines, you should get them as a complete set:

  • Engine plate
  • Flywheel (A12 vs A14/A15)
  • Transmission
  • Release lever
  • Release bearing carrier

If you don't use a matching set, and after swapping transmissions you find the clutch doesn't engage correctly you may need to use the shorter Sleeve, or add/remove an engine plate which can be obtained from a newer engine.

Usage

See usage Combinations below. Follows is a factors consideration.

What determines whether you need to use the short or long bearing carrier? It seems the diff and propeller shaft have no effect on this. The dimension difference is between the engine and transmission case and what's in between:

  • Engine block rear face/crankshaft spec? Exactly the same.
  • Transmission front case depth. 56 differs from 56A.
  • Clutch cover installed height? It seems not. Clutch cover installed height (diaphragm spring-to-flywheel height):
    • B110: 30mm 1 @ diameter 62mm
    • B310: 30mm 1 for all engines & transmissions
  • Flywheel? Not only does weight differs, but the thickness differs A12 vs A14/A15.
  • Clutch fork (release arm)? All 56-series B110/B210/B310 are the same. 60-series differs.
  • Engine plate (or lack thereof)? 30411 Rear Engine Plate Part Numbers

The GX5 uses a different release bearing carrier sleeve, because it uses a 56A transmission.

B110 uses no engine plate, only a dust cover as on the right:
17598.jpgAlbum click to view
Left: 4.5mm thick engine plate, used by B210 and later B120 (Datsun 1200 truck)

B110: the transmission front case dimension differs:
* B110 no plate, 3/4spd - carrier H1000
* B110 plate, 5-speed - carrier H5000
B120: Transmission front case differs, but how?
* B120 no plate, Long Body - carrier H1000
* B120 plate, Short Body - carrier H5000
B210, flywheels are different with the different transmissions, but does that matter?
* B210 plate, 60-series - carrier H1000
* B210 plate, 56-series - carrier H5000

Is there one simple difference which determines the carrier length? Or a combination of factors?

POST Clutch release bearing carrier

60-series 5-speed: the ball the fork runs on is 3.5mm further back from the bellhousing face than it is on my 56 series

Dust Cover: bolts to front of transmission, not between engine and transmission, and so has no effect on clutch functionality
4f0kyuk0_xyx.jpg

Specifications

23061.jpgAlbum click to view

30501-H5000 short
* [W] Width [length including installed bearing]: 47.1 mm (1.854")
* [A] Sleeve length: 43.5 mm  (1.713")
* Fork to face length: 40 mm (1.574")
30501-H1000 original length
* [W] Width [length including installed bearing]: 51.6 mm (2.0310")
* [A] Sleeve length: 48 mm (1.889")
* Fork to face length: 44.5 mm (1.7510")
General
* Bore: (25.0 mm) 0.9860 inch 
* O.D.: (53.1 mm) 2.890 inch [including fork tabs]
* Fork Groove Diameter: (34.7 mm) 1.3670 inch
H10/H75 standard length (per NTN specs)
overall width: 2.031" 51.6mm
fork to face:  1.751" 44.5mm
H50 length (per BCA specs)
overall width: 1.854" 47.1mm
fork to face:  1.574" 40.0mm

Combinations

The following table is based on limited reports. Please Edit this article to correct any flaws or to add more information.

A12 flywheelA14/A15 flywheel 
56L transmissionstandardshort
56A/60 transmissionshortdouble-short
.* standard: use original length 1200 bearing sleeve without engine plate
.* short: needs short bearing sleeve OR engine plate (but not both)
.* double-short: Needs both short bearing sleeve + engine plate

Bad combos

  • A14 flywheel, no engine plate, 56A/60 transmission, long carrier. Problem: long. Clutch won't disengage, won't come out of gear. Solution: Add plate (or use short carrier)
  • A12 flywheel, engine plate, 56L transmission, short carrier. Problem: double-short. Clutch won't engage, too much play, gears grind when engine running, car won't go. Solution: Remove engine plate AND use standard carrier.
  • A12 flywheel, 56A/60 transmission, short carrier. Problem: short. Clutch won't fully engage/slips, gears grind when shifting. Solution: Use standard carrier.

HELP us out by measuring your parts and reporting the measurements in POST Engine backing plate - should I use it or lose it?

Measuring gearbox ball pin height
23642.jpgAlbum click to view

FS5W60L - bellhousing face to ball pin:
128 mm to ball-pin mount face (~5 inches)
98 mm to top of ball (~3-7/8 inches)

F4W56A
128-129mm to ball-pin mount face (5-1/16 inch)
F4W60L (original Datsun 1200 4-speed)
???

Plate Thickness?
23643.jpgAlbum click to view

Flywheel Thickness?
23641.jpgAlbum click to view

release bearing Sleeve length?
23060.jpgAlbum click to view

Part Numbers

Also see: 11251 / 30411 rear engine plate
30501-H1000 SLEEAVE-BEARING CLUTCH RELEASE B110
30501-H1000 SLEEVE-CLUTCH RELEASE B120 SB
30501-H5000 SLEEVE-CLUTCH RELEASE B120 LB
30501-H5000 SLEEVE-BEARING CLUTCH RELEASE B210 JDM A12 
30501-H5000 SLEEVE-BEARING CLUTCH RELEASE B210 -0874 USA
30501-H1000 SLEEVE-BEARING CLUTCH RELEASE B210 0974-0177 USA [60 & 63 series]
30501-H7000 SLEEVE-BEARING CLUTCH RELEASE B210 7607- JDM A14 F4W60L
30501-H7500 SLEEVE-BEARING CLUTCH RELEASE B210 -7606 JDM A14 F4W60L
30501-H7500 SLEEVE-BEARING CLUTCH RELEASE B210 0278- USA A14 [60 & 63 series]
30501-H5000 SLEEVE-BEARING CLUTCH RELEASE B310 56-series
30501-H7500 SLEEVE-BEARING CLUTCH RELEASE B310 60-series
30501-H8560 SLEEVE-BEARING CLUTCH RELEASE B310 A12/A13 5-speed 60 series JDM 
30501-H5000 SLEEVE-CLUTCH RELEASE F4W56A
30501-H7500 SLEEVE-CLUTCH RELEASE FS5W60A, F4W60L
30501-H8560 SLEEVE-CLUTCH RELEASE JDM B310 A12 FS5W60(L?), A13 FS5W60A
C120 Vanette JAPAN
30501-H1000 V.A12 7907-, T.CT 7907-8106
30501-H5000 V 7810-7907
30501-H7500 T.A14+K 7810-8006, A14/A15 8006-8106, 
            (V+T).A15.R4 +*HK.GL.A15.R4
            +A15.MT 8106-8508, A12.R5
30501-H8560 A15.R5 8508-
30501-H8560 T.A12.DX 7907-8508
30501-H8560 T.A12 7810-7907
GC22 VANETTE LARGO 8605-9303
30501-H7500 A15S
C22 VANETTE JAPAN 8509-9403
30501-H7500 A15
30501-H8560 A12
TC22 VANETTE TRUCK JAPAN 8811-9403
30501-H7500 A15S
30501-H8560 A12S 
Note: All C22/TC22/GC22 use RS5W60A, plate 30411-H5001
and lever 30531-H7410.
63-Series Transmission
30501-K0500 A14 FS5W63A JDM
* also used by Z31 VG30T.MT.M5 from 0986
H1000 vs H5000: 4.5mm
* Overall width difference: 1.78"/4.5mm
* Fork-to-Face width difference: 1.78"/4.5mm
STANDARD LENGTH
* Nissan 30501-H7500 $19.47 USD
** superseded 30501-H1000 
* Timken DNB01576C Summit Racing $33
* Beck/Arnly 0621153
* 221068 SACHS
* 221157 SACHS
* SN3768 SACHS
* 2DN1703 FEDERAL
* 46539 DUECO
* 651043 BLUECH
* 768 APRA/EPE
* A4100-DNB AETNA
* B49614 A-1
* C6110 SEAL-P
* CB2048C GREEN
* CB68 LUCAS
* DH1000C FENCO
* DNB01576C FM
* NTN-BCA JA00986C
** Bore: 0.9860
** O.D.: 2.890
** Overall width: 2.0310"
** Fork to face: 1.7510"
** Fork Groove Diameter: 1.3670
* N2026 PIONEER
* N2048C PIONEER
* N3048 SKF/C-R
* N3768 LUK/B-W/BWD/NIEHOFF
SHORT LENGTH
* 30501-H5000 $16.75 USD
* Timken DND01576C Summit Racing $26
** 1.3670/35mm fork groove diameter
** 1.7510/42.5mm fork to face
** 2.0310/51.6mm overall width
** Weight: 1.11 lbs 
** Bearing Inner Race Bore Diameter (in): 0.9860
** Bearing Inner Race Material: Steel 
** Bearing Inner Race Width (in): 1.854 
** Bearing Outer Race Material: Steel 
** Bearing Outer Race Outside Diameter (in): 2.89 
** Bearing Outer Race Width (in): 1.854 
** Bearing Pre-Lubricated: Yes 
** Bearing Rolling Element Cage Material: Steel 
** Bearing Rolling Element Material: Steel 
** Bearing Rolling Element Rows: Single 
** Bearing Seal Configuration: Fully Sealed
* 0621156 Beck/Arnley
* 46538 DUECO
* 767 APRA/EPE
* A4100-DND AETNA
* C6109 SEAL-P
* B49616 A-1
* Green CB-2048-B
* CB67 LUCAS
* DH5000C FENCO
* J00986C BCA
** Bore: 0.9860
** O.D.: 2.890
** Overall width: 1.8540"
** Fork to face: 1.5740"
** Fork Groove Diameter: 1.3670
* N2027 PIONEER
* N2048B PIONEER
* N3050 SKF
* N3050 C-R
* N3767 B-W/LUK
* SN3767 SACHS
* ST5767 PERFECTION
* TT2048B L&S

H85 Sleeve

One rare option for B310 was the A12 engine along with 5-speed. It used a extra long sleeve. This part is generally only available in Japan market.

30501-H8500 - rare JDM long type
24654.jpgAlbum click to view

It is 4.5 mm longer than the original.
23060.jpgAlbum click to view
Left: JDM rare long type. Right: B110 original


This may have been used with an engine plate. If so, and you remove the engine plate, then the standard length sleeve will work.

In other words

  • A12 (thin) flywheel
  • 60-series (short) transmission
  • 4mm engine plate
Requires long sleeve. However there is no need to use the engine plate.

Available from Pitroad
8392.jpgAlbum click to view

You can also fabricate your own custom-length sleeve. McKay lengthend the short sleeve to standard length. The same method can be used to make an extra-long sleeve
15140.jpgAlbum click to view

26187.jpgAlbum click to view 

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