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Hilux R150/R151 Manual Transmissions

The document discusses 4 manual transmissions - R150, R150F, R151, and R151F - used in new Hilux models. It provides details on their specifications and descriptions. A lever-type synchromesh mechanism has been adopted for 5th and reverse gears to enhance ease of operation. This mechanism uses two shifting keys that move together to push the synchronizer ring, reducing shift effort for 5th gear and applying a brake to prevent noise when engaging reverse.

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Kevin Strong
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2K views7 pages

Hilux R150/R151 Manual Transmissions

The document discusses 4 manual transmissions - R150, R150F, R151, and R151F - used in new Hilux models. It provides details on their specifications and descriptions. A lever-type synchromesh mechanism has been adopted for 5th and reverse gears to enhance ease of operation. This mechanism uses two shifting keys that move together to push the synchronizer ring, reducing shift effort for 5th gear and applying a brake to prevent noise when engaging reverse.

Uploaded by

Kevin Strong
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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CH-4

CHASSIS R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS


DESCRIPTION
The new Hilux has been adopted the R150, R150F, R151, and R151F manual transmissions. The
application for these manual transmissions are as followings:
Engine Type

Drive Type

2TR-FE

2WD, 2WD PreRunner

R150

1GR-FE

4WD

R150F

2KD-FTV
High Version
1KD-FTV

2WD, 2WD PreRunner

R151

4WD

R151F

Transmission

A lever type synchromesh mechanism has been adopted for the 5th and Reverse gears of these manual
transmissions to enhance the ease of operation.

Lever Type Synchormesh


Mechanism

271CH02

R150

Lever Type Synchormesh


Mechanism

233CH09

R150F

CH-5

CHASSIS R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

CH-6

CHASSIS- R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS


Specifications
Transmission Type

R150

R151

R151F

2TR-FE
1GR-FE
1st

3.830

2KD-FTV
High Version
1KD-FTV
4.313

2nd

2.062

2.330

3rd

1.436

1.436

4th

1.000

1.000

5th

0.838

0.838

Reverse

4.220

4.220
2.6 (2.7, 2.3)

2.2 (2.3, 1.9)

Engine Type

Gear Ratio

R150F

Oil Capacity
Liters (US qts, Imp.qts)

2.6 (2.7, 2.3)

2.2 (2.3, 1.9)

Oil Viscosity

SAE 75W-90

API GL-4
or GL-5

Oil Grade
Weight (Reference)*

kg (lb)

52.0 (114.6)

*: Weight shows the figure with the oil fully filled.

52.0 (114.6)

Synchromesh Mechanism Specifications


Transmission Type
Engine Type

R150, R150F

R151, R151F

2TR-FE

1GR-FE

1st

Single Cone

2nd
3rd
4th
5th

Triple Cone
Single Cone
Single Cone
Single Cone
With Lever Type
Single Cone
With Lever Type

Reverse

1KD-FTV

Triple Cone

2KD-FTV
High Version

CH-7

CHASSIS R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

LEVER TYPE SYNCHROMECH MECHANISM


1. General
The lever type synchromech mechanism consists of 2 shifting keys, shifting key spring, and shifting key
return spring.

Counter 5th Gear

Hub Sleeve
Shifting Key
Snap Ring
Shifting Key
Return Spring

Shifting Key Spring


Hub Sleeve
Shifting Key
Shifting Key

Shifting Key Return Spring

Snap Ring

Counter 5th Gear

Shifting Key Spring


Shifting Key
233CH05

CHASSIS- R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

CH-8

CH-9

CHASSIS R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

2. Operation
While shifting into 5th, the 2 shifting keys move in unison with the hub sleeve (F1). With "A" acting as
the fulcrum, the 2 shifting keys move to push the synchronizer ring only for the amount of the lever ratio
(F2). The shift effort can be reduced only for this amount.

Hub Sleeve Moving Direction

Hub Sleeve
Shifting Key
F1

Synchornizer
Ring

Shifting Key

Shifting Key
233CH02

233CH01

While shifting into reverse, with "B" acting as the fulcrum, the 2 shifting keys move to push the
synchronizer ring (F2). As a result, a brake is applied to the rotation of the counter shaft and gear noise is
prevented.

Hub Sleeve Moving Direction

Hub Sleeve
Shifting Key

F1

Shifting Key

Shifting Key
233CH03

Synchornizer
Ring

F2
233CH04

CHASSIS- R150, R150F, R151 AND R151F MANUAL TRANSMISSIONS

CH-10

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