Steering Gearbox: Inspection: Limit

Make a measurements as follows. If it exceeds the specified service limits, adjust or replace.

CAUTION:

When making a measurement, secure the gearbox in a vise using ST.
When fixing the gearbox in a vise, apply a wooden piece on the flange portion.

Preparation tool:

ST1: STAND (926200000)

ST2: BOSS D (34199AG000)

Rack shaft sliding resistance

Fig 1: Measuring Rack Shaft Sliding Resistance

Courtesy of SUBARU OF AMERICA, INC.

Limit: 343 N (35.0 kgf, 77 lbf) or less

Left/right differential of sliding resistance: 20% or less

Rack shaft play in the radial direction

Right-turn steering
Limit

Both amplitudes: 0.4 mm (0.016 in) or less

Condition

Weighting point

L1: 10 mm (0.39 in) from rack shaft end

Rack shaft end P: 98 N (10 kgf, 22 lb)

Measuring point

L2: 5 mm (0.2 in) from dust cover

NOTE: <Example of magnet stand and dial gauge installation>
The location where the magnet stand is installed varies to stabilize the magnet stand.

Fig 2: Example Of Magnet Stand And Dial Gauge Installation
Courtesy of SUBARU OF AMERICA, INC.
Left-turn steering
Limit

Both amplitudes: Direction ← →: 0.6 mm (0.024 in) or less

Both amplitudes: Direction ← →: 0.4 mm (0.016 in) or less

Condition

L: 5 mm (0.2 in) from dust cover

Rack shaft end P: 98 N (10 kgf, 22 lbf)

NOTE: <Example of magnet stand and dial gauge installation>
The location where the magnet stand is installed varies to stabilize the magnet stand.

Fig 3: Magnet Stand And Dial Gauge Installation
Courtesy of SUBARU OF AMERICA, INC.

Input shaft play
In radial direction
Condition

L: 5 mm (0.2 in) from dust cover

Input shaft tip P: 98 N (10 kgf, 22 lbf)

Limit

Both amplitudes: 0.26 mm (0.0102 in) or less

NOTE: <Example of magnet stand and dial gauge installation>
The location where the magnet stand is installed varies to stabilize the magnet stand.

Fig 4: Measuring Input Shaft Play
Courtesy of SUBARU OF AMERICA, INC.
In axial direction
Limit

Without play

Fig 5: Measuring Limit Without Play
Courtesy of SUBARU OF AMERICA, INC.

Rotational resistance of gearbox

Using the ST, measure the gearbox turning resistance.

Preparation tool:

ST: SPANNER (34099PA100)

Fig 6: Measuring Gearbox Turning Resistance Using Spanner (34099PA100)
Courtesy of SUBARU OF AMERICA, INC.

Service limit:

Maximum allowable resistance: 21 N (2.14 kgf, 4.7 lbf) or less

Difference between right and left rotational resistance: 20% or less