Hale 4DK Series - Manual (Page 41)

Manual p/n: 029-0020-79-0 41
4DK Series Pumps
SECTION 6 PUMP INSTALLATION
OVERVIEW
This section provides guidelines and recommen-
dations for installing a Hale 4DK pump and
gearbox into a truck chassis.
FRAME MOUNTING
The 4DK gearbox is mounted using four 5/8-11
bolts on either side of the gearbox. See Figure
22: "4DK Series Pump Installation" in the next
column. All eight bolt holes are tapped 1"
(25mm) deep.
IMPORTANT !
TO FULLY SUPPORT THE GEARBOX AND PUMP,
USE ALL EIGHT BOLT HOLES.
DRIVELINE ISSUES
Due to the increasing sophistication of fire appa-
ratus and truck design, there has been an in-
crease in the number of reported driveline prob-
lems. These problems include: drive shaft failure,
loosened drive ends on pump gearboxes, broken
mounting brackets, driveline joint or slider wear,
bearing wear on pumps or rear axles, and vibra-
tions at specific road speeds. While the inci-
dence of these problems is low, they are expen-
sive to fix yet easy to avoid.
It is critical to use computer driveline analysis
software, such as Dana’s “The Expert,” during
driveline layout. Dana’s software is available free
on the World Wide Web at:
http://www2.dana.com/expert.
While using the software, make sure to perform
three separate driveline analyses:
❑ Front drive shaft assembly
❑ Rear drive shaft assembly
❑ Total system
This ensures individual shaft cancellation and
correct phasing.
When performing calculations, strive to achieve
the lowest driveline torsional and inertial vibra-
tions, making sure to avoid severe driveline
angles. Be conservative and always err on the
side of SAFETY. Always measure the drive shaft
after construction to make sure it matches the
computer design.
Remember the following points while designing a
driveline:
❑ Problems can occur with our without
noticeable vibration.
Figure 22: 4DK Series Pump Installation
3.72"
(95mm)
3.25" (83mm)
4" (102mm) Victaulic
Discharge
4" (102mm)
Victaulic Suction
1.75"
(45mm)
5.75"
(146mm)
5.75"
(146mm)
1.75"
(45mm)