9-30 Published 08/16/19 Control # 112-05
CRANE INSTALLATION 500E2 SERVICE MANUAL
The 85% tipping factor as outlined in OSHA and ANSI
specifications means that when lifting the full capacity loads
most likely to cause the truck (with outriggers and stabilizer
set) to overturn, the unit is at 85% of tipping over. Increasing
this full capacity load by 117.6% (overloading) will cause the
unit to tip over.
In order to determine the amount of counterweight required,
it is necessary to add up the weight that each permanently
attached piece of equipment will place on the front and rear
axles of the truck along with the initial truck chassis weight
and then compare the total front and rear axle weights with
the weights listed on the “Mounting Configuration”
(Installation Section) pages to determine the amount and
location of counterweight required.
8800 lb (3992 kg)
Initial Chassis
Weight
232 in
(589 cm)
248 in
(630 cm)
1200 lb (544 kg)
Bed Weight
150 lb (68 kg)
Pump and PTO Weight
60 in
(152 cm)
7500 lb (3402 kg)
Initial Chassis
Weight
0 in
68 in
(170 cm)
52 in
(132 cm)
Rear Front
Initial Front Axle Weight
Pump and PTO Weight
Initial Rear Axle Weight
Bed Weight
Add the front and rear axle
weights
Compare with weight required
for this type of mount from
Mounting Configuration 1
Difference
(7500) x 0
=
0 lb
232
(3402) x 0
=
0 kg
589
(150) x 60
=
39 lb
232
(68) x 152
=
18 kg
589
(8800) x 232
=
8800 lb
232
(3922) x 589
=
3922 kg
589
(1200) x 248
=
1283 lb
232
(544) x 630
=
582 kg
589
7500 - 0 = 7500 lb
3402 - 0 = 3402 kg
150 - 39 = 111 lb
68 - 18 = 50 kg
8800 - 8800 = 0 lb
3922 - 3922 = 0 kg
1200 - 1283 = -83 lb
544 - 582 = -38 kg
10122 lb
4592 kg
7528 lb
3414 kg
Rear Axle Weight
Front Axle Weight
10500 lb
4763 kg
8000 lb 3629 kg
378 lb
171 kg
472 lb
215 kg
(Wt) x (Dist from Front Axle)
=
Rear Axle Wt
Wheel Base
Wt - Rear Axle Wt
=
Front Axle Wt
Counterweighting Determination Example
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