STARTING SYSTEM — Starter — Armature Check (Cont'd), Bearing Check, Pinion Shaft Thrust Gap Check (Base K11)
EL-31prose procedureBase K11 STARTING SYSTEM — armature mica undercut (>0.3mm/0.012in min), bearing-bush renewal (press out front+intermediate, soak new in oil 30min, press flush), pinion shaft thrust gap 'ℓ' check (per SDS, adjust if out of range). Figs SEL207P-209P, UEL033.
Armature Check (Cont'd)
Armature check (continued)
- 5Check depth of insulating mica from commutator surface. Less than 0.3 mm (0.012 in) ... Replace.
Bearing Check
Renew bearing bushes if there is:
• evidence of armature fouling magnets.
• perceptible side play between bush and shaft.
Bearing bush renewal
- 1Press worn out bushes from the Front and Intermediate brackets using lever/hand operated press and suitable mandrels. Soak new bushes in engine oil for 30 minutes before press fitting into position using a suitable press and mandrel.
Pinion Shaft Thrust Gap Check
Check movement 'ℓ' of pinion when it is pushed forward until it touches front bracket stopper.
Movement 'ℓ': Refer to S.D.S.
If movement 'ℓ' is not within specified range ... Adjust gap.
NOTE
Final bench checks: (5) commutator mica undercut must be > 0.3 mm (0.012 in) deep; if less, replace. Bearing bushes: renew if armature fouls magnets or there's perceptible side play — press out old, soak new in engine oil 30 min, press in flush with casting. Pinion thrust gap 'ℓ' measured at front-bracket stopper, value per SDS, adjust if out of range.
See also
S.D.S.
