Steering Gearbox: Inspection: Limit
Make a measurements as follows. If it exceeds the specified service limits, adjust or replace.
- 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
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. - 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.
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. - In axial direction
Limit
Without play
Rotational resistance of gearbox
Using the ST, measure the gearbox turning resistance.
Preparation tool:
ST: SPANNER (34099PA100)
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