24 - 4
EXAMPLE -
Boom Ram110 x 60
1
Using the figures given in the table on page 3, plot a
graph for the ram to be tested.
2
Check the pressure in the ram (induced by the applied
load). In this example the pressure on the gauge reads
107 bar; 1500 lb/in
2
.
3
Draw a vertical line from the pressure reading to the
plotted graph line. Where the vertical line intercepts the
graph line, draw a horizontal line and read the permitted
ram d isp lac ement . In t his examp le t he p ermit t ed
maximum displacement is 18 mm.
N ot e
: A b lank g rap h is p ro vid ed o n t he nex t p ag e,
photocopy and use as required.
Section E
9803/3280
Section E
24 - 4
Issue 1
Service Procedures
0
50
100
150
200
250
20
40
60
80
100
120
8mm
18mm
26mm
52mm
MAXIMUM RAM MO
VEMENT PERMITTED (mm)
PRESSURE (BAR)
380210
Boom Ram 1
10:60
69bar
138bar
107bar
207bar