Packing Gland Adjustment, Break-In, Maintain

PACKING GLAND ADJUSTMENT

Near the transmission and welded to the bottom side of the hopper is a packing box with special rubberized packing. A split packing gland is located on the outside of the hopper. By tightening this gland the packing in the box is compressed to keep moisture from leaking out around the shaft.

It is necessary on new units for the packing to be compressed several times before it sets properly around the drive shaft.This must be done when the unit is put into operation for the first time as well as each time a complete new set of packings are installed. The following is a suggested procedure of maintenance:

BREAK-IN

Tighten evenly approximately 100 in. pounds torque) the two nuts located on packing gland. These nuts should be tight but not so tight as to seize or bind the shaft. Do this twice a day for the first 5 days of running time.

MAINTAIN

The packing should be lubricated daily with two shots of a good grade of waterproof grease. The grease fitting located on the drive line between the packing gland and the transmission is provided for this purpose. Daily lubrication will prolong the life of the packing.

After break-in period, tighten nuts at least once a week unless there are signs of leakage around shaft, (periodic checks for this is suggested) then tighten at once.

When all take-up on gland has been used, loosen packing gland, coat new packing ring and drive shaft with a generous amount of a good grade of waterproof grease, insert packing, and continue to maintain as noted above.

NEW PACKING

At such a time when old packing is to be completely replaced, coat shaft and packing generously with a good grade of waterproof grease and insert packing rings. Tighten packing gland nuts to approximately 150 in. pounds torque to seat packing, then back off nuts so drive shaft is not bound, but not less than 100 in. pounds torque on the nuts.Then follow procedure outlined above.

FM-9 — OPERATIONS

DRIVE SHAFT ALIGNMENT

If at any time the transmission is disassembled from its mounting base then caution should be taken that on reassembly the drive shaft is in alignment with transmission. to check alignment let drive shaft with packing and packing gland installed, rest free. Place transmission onto base.If mounting holes in drive shaft and transmission do not line up without any pressure or force being applied then it is necessary to place shims beneath transmission until required height is obtained.

REPLACING AND ADJUSTING THE BELTS

For adjusting the belts on the countershaft pulleys the unit is equipped with belt tighteners. The belts can be tightened by turning the set screws on the counter shaft risers. When adjusting the belts, both sides must be equally adjusted. the belts should be fairly tight.

To adjust the compressor belts, loosen the compressor mounting bolts and slide the compressor until belt is tight. Note: This belt should not be as tight as the ones on the countershaft.

To replace the countershaft belts, loosen the set screws in the bearing collars and slide the shaft out until the belts can be removed. However, it may be necessary (due to the bearings freezing to the shaft) to remove the two bolts on the bearing bracket at each end and slide out the shaft and bearings. When installing a new belt, readjustment will be necessary. After a few hours of operation check the adjustment of the new belt as there is generally a certain amount of initial stretch.

COUNTERSHAFT BEARINGS

The countershaft supports are equipped with double-sealed ball bearings.These bearings are pre-lubricated at the factory and require no additional lubrication.

SLOW-DOWN DEVICE

A slow-down device is located on the countershaft riser. This device is actuated by air, which is controlled by the air valve on the spray gun. When the air valve is “on,” the shaft of the slow- down device is extended and thereby allows engine to reach the set governed speed.When the valve is turned “off,” the shaft retracts and the engine idles at preset speed.

The governed engine speed is set at the factory at 3000 r.p.m. less volume can be attained by readjusting the governed speed. However, the speed should not be adjusted to less than 2000 r.p.m. (about 5 notches on the throttle control lever).

ESSICK FM9 — PARTS & OPERATION MANUAL — REV. #1 (03/12/01) — PAGE 11