128
Twin Disc, Incorporated
Troubleshooting
Power Transmission System Operator’s Manual #1020510
Test 8 - Clutches Modulated
Select
Test 8
, set engine at 1950 RPM, select
D
on the push-button range
selector. Use
MODULATE
option, and increase % engagement to modulated
clutch and record clutch pressure.
Table 9. Modulated Pressures
Pressure, PSI
Current
% of Full
Min
Clutch
1
Clutch
2
Clutch
3
Clutch
4
Clutch
5
Clutch
6
Lock
up
Max
0
0
0
5
0
0
10
0
0
15
0
0
20
0
0
25
0
0
30
0
15
35
3
29
40
10
46
45
30
70
50
52
90
55
74
110
60
93
129
65
112
148
70
135
170
75
155
189
80
177
210
85
195
230
90
218
246
95
230
255
Main
Pressure
-
-
Lube
Pressure
-
-
Summary of Contents for TA-90-8501
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