Hydraulic System (Scm Models Only); Hydraulic Fluid Check - Challenge SCM Instructions And Parts Manual

9. Close the top cover.
10. Reconnect power, and switch on the machine (SCM models only).
11. Use scrap to cover the paper sensor in the table. Depress and hold the foot switch/foot pedal to
remove the knife hold-down block or hitch pin
12. Switch off the machine and disconnect power (SCM models only).
13. Open the top cover.
14. Place the .002" feeler gauge between the dovetail and the gib at the upper end of the gib.
15. Adjust the two, upper gib-screws until the gib contacts the feeler gauge. Lock their jam nuts in
place and remove the feeler gauge.
16. Close the top cover and reinstall the chip drawer.

8.2 Hydraulic System (SCM Models Only)

The hydraulic fluid should be checked every six months and topped off as necessary. Depending on
usage, it may need to be checked more frequently.

8.2.1 Hydraulic Fluid Check

To check the hydraulic fluid level:
1. Switch off the machine and disconnect power.
2. Remove the front cover.
3. View the hydraulic reservoir sight line.
4. If the fluid level is below the fill line on the side of the tank, remove the filler cap and add
fluid until it reaches the filler line. DO NOT OVERFILL!
5. Only use ISO VG 100 hydraulic fluid. This can be ordered from Challenge in five-gallon
containers, part number S-1991-3. See Section 8.2.3 . Do not use transmission fluid.
Transmission fluid will damage power unit.
6. Screw the filler cap back into the reservoir and replace the front cover.
Disconnect main power.
See Section 2.2 Power Lockout Procedure.
Disconnect main power.
See Section 2.2 Power Lockout Procedure.
Figure 18 – Hydraulic Reservoir Location
8.0 Appendix A - Maintenance Guide
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