Ergon Crafco 46200EB, Parts Manual, Page: 50 / 202

EZ 1000 Series II Melter Part Manual
Chapter 6 Maintenance Instructions
©2019 by Crafco, Inc. All Rights Reserved……………..…………………………………..….…Maintenance Instructions 6-2
6.7 Pump Packing Adjustment and Replacement
Material pump packing should leak a small amount (5-10 drops per minute) during normal use. If
packing adjustment is required, operate the pump under normal conditions before making any
adjustments. Tighten packing gland nuts evenly (1-2 flats on the nut) until there is 5-10 drops per
minute.
DO NOT OVER TIGHTEN packing gland as that will shorten the life of the packing and
wear out the sealing surfaces faster.
To replace packing, remove two nuts, packing gland clip, and packing gland halves. Use a packing
hook to remove all seven of the packing rings. New packing rings should be installed one ring at a
time, with the joints staggered 180° apart. Each ring should be seated firmly before the next ring is
installed.
The packing gland nuts should first be evenly tightened with a wrench to seat the packing firmly in
the stuffing box and against the shaft.
DO NOT over tighten the packing. The gland nuts should
then be backed off until finger tight. Follow adjusting pump packing at the beginning of this section.
6.8 Lug Nuts
Torque all nuts/bolts before first road use and after each wheel removal. Check and torque after
the first 10 miles (16 km), 25 miles (40 km), and again at 50 miles (80 km). Check periodically
thereafter.
Torque in stages as follows:
First stage 20-25 foot-pound (ft-lb) (89-111 N)
Second stage 50-60 foot pound (ft-lb) (222-266 N)
Third stage 90-120 foot pound (ft-lb) (400-534 N)
Tighten bolts and nuts in the sequence shown in Fig. 6-1.
6.9 Brakes
Check the brakes daily.
6.10 Tongue Jack
Lubricate the tongue jack, using a good grade of bearing grease.
4-BOLT 5-BOLT 6-BOLT
1
2
3 4
1
2
3 4
5
1
2
3
4 5
6
Fig. 6-1 Lug bolt Tightening Sequence