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[Datsun 1200 encyclopedia]

Release Bearing

Revision as of 08:09, 28 April 2011; view current revision
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The clutch Release Bearing is often called the throwout bearing and is operated by the clutch Release Lever.

TM-04_TM9_th.JPG


Contents

Specifications

release bearing, throwout bearing

  • Bore = 1.5748
  • Outer Diameter = 2.8898
  • Width = 0.752

Part Numbers

Bearing and spring are same: B110, B120, B210, B310 regardless of engine or transmission type. RHD and LHD are the same.

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 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 Van

Mechanical Clutch (RHD)

See main articles Release Lever and Clutch

Hydraulic Clutch (LHD)

See Hydraulic clutch

Bearing Sleeve

Datsun 1200 release bearing sleeve/carriers

  • 30501-H1000 SLEEVE-BEARING CLUTCH RELEASE B110 ex. 5-speed, B120 LB, B120 SB -7308
  • 30501-H5000 SLEEVE-CLUTCH RELEASE B110 5-speed, B120 SB 7309-

23061.jpg

For A-series engines, there are two lengths. One is 4.5 mm longer.
15140.jpg
Discussion: Clutch Problems

23060.jpg


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

  • Engine plate
  • 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 make your own longer sleeve.
8392.jpg

Datsun Sleeve ID:
_th447D15AA8E12B1F8C5F887EE8D8E5305.jpg

Differences

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

  • Engine block rear face/crankshaft spec?
  • Transmission front case depth?
  • 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? Weight differs, but isn't the face depth the same A12/A14/A15? All B110 uses same flywheel, yet the GX-5 uses a different release bearing carrier sleeve. Likewise, all B120 utes use the same flywheel, yet SB uses one carrier and LB the other.
  • 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

B110 uses no engine plate, only a dust cover as on the right:
17598.jpg
Left: 5mm thick engine plate, used by B210 and later B120 (Datsun 1200 truck)

B110: is the transmission front case dimension different?

  • 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?


discussion

"[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"

Part Numbers

  • 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
  • 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
  • 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


63-Series Transmission

  • 30501-K0500 A14 FS5W63A JDM
    • 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

Specification

  • [d] Bore: (25.0 mm) 0.9860 inch
  • [F] O.D.: (53.1 mm) 2.890 inch [including fork tabs]
  • [E] Fork Groove Diameter: (34.7 mm) 1.3670 inch


30501-H5000 short

  • [W] Overall width [length]: (47.1 mm) 1.854 inch [including bearing]
  • [A] Overall length: (~43.5 mm) [not including bearing]
  • Fork to face length: (40 mm) 1.5740 inch


30501-H1000 original length

  • [W] Overall width [length]: (51.6 mm) 2.0310 inch [including bearing]
  • [A] Overall length: (~48 mm) [not including bearing]
  • Fork to face length: (44.5 mm) 1.7510 inch

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