ST-70 — PARTS & OPERATION MANUAL — REV. #4 (05/29/07) — PAGE 33
5. If the pump is to be uncoupled from the tow vehicle after
backing with the lever knob engaged, block all pump wheels
and pull forward slightly to take strain off of the actuator.
Uncouple the actuator by lifting the release handle and
raising the trailer tongue. Make sure the lever knob is in the
“Towing Position” when uncoupling from the trailer.
CAUTION:
Before towing the pump, always ensure that
the lever knob has disengaged and is in the
“Towing Position.”
MAINTENANCE
1. Keep all links and pivots lubricated to prevent rusting and
ensure ease of operation. Using SAE 30 oil, lubricate inside
the release handle and inside the actuator body. This can
be reached from the underside of the actuator.
NOTE:
Lubricate the hitch ball with conventional automotive
grease or a lubricant made for hitch balls.
2. Check for any leaks in the brake system. Periodic checks
should be made on all hoses to guard against cuts and
worn hoses which may cause failure (leaks, rupturing
under pressure, and collapsing). Replace defective hoses.
3. Check the brake fluid level in the master cylinder reservoir.
Keep it filled to within ½" from the top of the reservoir.
CAUTION:
Do not fill the master cylinder reservoir with
used brake fluid. Do not fill the reservoir
beyond ½" from top. Do not overfill, brake fluid
will damage paint.
4. At the beginning of each year, inspect the brakes for
excessive wear, replace the linings if necessary.
NOTE:
Wheel bearings and seals should be inspected and packed
at this time.
Extended Storage Instructions
The following preventative maintenance is recommended for
extended periods of storage.
1. Check brake system for proper fluid level in master cylinder
and bleed all lines.
2. Lubricate all links and pivots to prevent any rusting.
3. Remove wheel and drum assemblies and spray a good
anti-corrosion compound (CRC formula 5-56) under rubber
boot on forward end of brake wheel cylinder. Avoid spraying
drum and brake lining.
4. Grease all bearings and reinstall wheel and drum
assemblies.
5. Make sure breakaway cable is fully released.
6. After extended storage, refer to the Maintenance Steps
listed above to insure that the trailer is ready for towing.
ST-70 — TOWING INFORMATION
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