AR26.45-W-0051A | Check shift oil pressure | 16.2.07 |
TRANSMISSION 715.500 /507 /510 /513 /517 /520 /527 /540 with CODE (N56) Transmission independent power take-off (NMV) i = 1.48
TRANSMISSION 715.500 /507 /510 /513 /517 /520 /527 /540 with CODE (N57) Transmission independent power take-off (NMV) i = 1.09
W26.45-1061-06
NMV shift pattern switched on
1 Pressure regulator valve
2 Pressure limitation valve with pressure regulator valve
3 4/2 directional control valve in pressure control valve
4 Oil filter (cartridge)
5 Bypass valve
6 Pressure limiting valve
7 Oil filter (metal sieve)
8 Output shaft
9 Oil pump
10 Hollow shaft
11 Intermediate gear
12 Driven gear
13 External plate carrier
14 External plate carrier
15 Shift piston
16 Shift cylinder
17 Compression spring
Z Compressed air connection
M1 Test connection for shift oil pressure
M2 Test connection for the lubricating oil circuit for the gears
K Pressure line for shifting the multi-disk clutch
P Pressure line from oil pump
R Return flow pipe
S1/
S3 Lubrication oil circuit for gears
S2 Lubrication oil circuit for multiple-disc clutch
W26.45-1077-01
M1 Test connection for shift oil pressure
W26.45-1060-10
Shift pressure graph
A Oil temperature approx. 35 °C
B Oil temperature approx. 80 °C
Modification notes
Check | |||
1 | Check lubrication oil pressure | ||
2 | Unscrew the screw plug at the test connection for shift oil pressure (M1) and connect the test pressure gauge | | |
3 | Start engine and switch on NMV | After switching on NMV, engine runs at the working speed programmed in the PSM. | |
4 | Read off and note down engine speed at tachometer and shift oil pressure at pressure gauge | Check the shift oil pressure if possible at a transmission oil temperature of approx. 80 °C. | |
5 | Compare read off values with the specified values: | Shift oil pressure at oil temperature of | |
Shift oil pressure at oil temperature of | |||
Shift oil pressure at oil temperature of | |||
If the specified values are not reached, check the power take-off with the aid of the shift diagram. | |||
6 | Detach test pressure gauge and install the screw plug | Use new sealing ring. |
Test values for PTO
Number | Designation | Transmissions with code N56, N57 (NMV) | |
BE26.45-N-1003-01B | Shift oil pressure at oil temperature of 35° C and an engine speed of 1000 rpm | bar | 17 |
BE26.45-N-1004-01B | Shift oil pressure at oil temperature of 80 °C and an engine speed of 1000 rpm | bar | 14 |
BE26.45-N-1005-01B | Shift oil pressure at oil temperature of 80 °C and an engine speed of 2000 rpm | bar | 18 |
Testing unit
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