Ptt Motor Inspection - Suzuki DF 90 Service Manual

8-12 POWER TRIM AND TILT

PTT MOTOR INSPECTION

Armature and Commutator
1. Inspect continuity between commutator and armature
core / shaft.
If continuity exists, replace armature.
09930-99320 : Digital tester
Tester range :
2. Inspect continuity between adjacent commutator segments.
If no continuity exists, replace armature.
3. Inspect commutator surface for gum or dirt.
Clean with #500 grit emery paper if necessary.
Measure commutator outside diameter.
09900-20101 : Vernier calipers
Commutator outside diameter :
Standard
Service limit
If measurement exceeds service limit, replace armature.
4. Measure commutator undercut (depth) between mica
(insulator) and segments.
Commutator undercut 1 1 1 1 1 (depth) :
Standard
Service limit
If measurement exceeds service limit, cut mica to specified
depth.
NOTE:
Remove all particles of mica and metal using compressed air.
Wear safety grasses when using compressed air.
(Continuity)
: 22.0 mm (0.87 in.)
: 21.0 mm (0.83 in.)
: 1.6 – 1.9 mm (0.06 – 0.07 in.)
: 1.3 mm (0.05 in.)
SEGMENT
MICA
1 Commutator undercut
1