Ptt Motor Relay Inspection - Suzuki DF70A Service Manual

1
• Ensure that the mica (insulator) between commutator
segments are undercut "a" to specified depth.
If undercut is less than service limit, cut to specified
depth.
WARNING
!
Wear safety glasses when using compressed
air.
NOTE
Remove all particles of mica and metal using
compressed air.
Commutator undercut
Standard: 1.6 – 1.9 mm (0.06 – 0.07 in.)
Service limit: 1.0 mm (0.04 in.)
"A": Segment
Brushes
• Check the length of each brush.
If brushes are worn down to the service limit, they
must be replaced.
Special tool
(A): 09900–20101 (Vernier calipers (150
mm))
Brush length
Standard: 9.8 mm (0.39 in.)
Service limit: 5.5 mm (0.22 in.)
(B)
I9J011220042-01
"A"
" a "
"B"
I9J011220043-01
"B": Mica
(A)
I9J011220044-01
O-ring
• Inspect the O-ring between the PTT motor and PTT
pump assembly. Replace if cuts, nicks or tears are
found.

PTT Motor Relay Inspection

1) Remove the PTT motor relay from the electric parts
holder.
Refer to "Electric Parts Holder Removal and
Installation" in Section 1D (Page 1D-5).
2) Check the resistance between each two lead wires.
Special tool
(A): 09930–99320 (Digital tester)
Tester knob indication
Resistance (Ω)
PTT relay coil resistance
Between "P" wire and "B" wire: 25 – 37 Ω
Between "Lbl" wire and "B" wire: 25 – 37 Ω
Lbl
B
Power Trim and Tilt: 2B-25
I9J011220045-01
Z9J0112206013
P
R
Bl
G
(A)
I9J011220046-01