Page 6 of 7
F−1031, Section 4209
Rev: 01/03/07
NOTE: Be sure that the packing joints are staggered at least 90
_
apart.
6.
Install packing glands, nuts and washers. Tighten gland nuts one flat be-
yond finger tight, see Figure 3.
NOTE: The milled slot on the nut should face the gland.
7.
Adjust packing as required per instructions on the next page.
Figure 3. Packing Gland Tightening
Final Assembly
1.
Connect pump to intake and discharge piping.
2.
Connect propeller or drive shaft transmission.
3.
Connect drain lines, electrical wiring and similar equipment to pump and
accessories.
4.
Fill gear case with lubricant as described in transmission operation and
maintenance instructions.
Packing Adjustment
The pump packing is designed and adjusted to drip slightly during operation.
This is to cool and lubricate the packing. It is desirable to adjust the stuffing
box to maintain a leakage rate of 10 to 120 drops per minute when operating
at a discharge pressure of 150 psi (10.3 bar).
Leakage through the braided flexible graphite (BFG) packing may be at zero
or diminish to zero leakage and may not respond to loosening of the packing
nuts to restore leakage, see Adjustment Step 3. While the packing gland and
stuffing box and pump body may reach high temperatures during this time,
the impeller shaft will be protected from heat damage.
CAUTION
Pump overheating hazard.
May cause damage to the pump.
Circulate enough water through the pump to prevent overheating.
WARNING
!
Truck movement hazard.
May cause serious personal injury.
Stop engine, set the parking brake and chock the wheels before going
under truck to adjust packing.
1.
Engage pump per appropriate operating instructions. Operate the pump
at the capacity pressure shown on the serial plate for ten (10) minutes.
CAUTION
Observe the stuffing box drip rate from the side of the truck.
2.
Observe leakage. Normal leakage is 10−120 drops per minute. (Leakage
may be zero or diminished to zero occasionally).
