Spearhead Twiga 555, Руководство пользователя

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Spearhead TWIGA
53
Recommended torque settings for hose unions
in conjunction with bonded seals
Hydraulic Hoses
Carefully check condition of all hoses during routine service, paying particular attention to
chafed outer casing. Securely wrap with waterproof adhesive tape to stop the metal braid
from rusting.
Daily inspect all hydraulic hoses and fittings to be in good order. Any damages or leaks must
be rectified immediately, this is part of the daily maintenance and it is your responsibility to
help ensure a long reliable working life. Spearhead provide a tool kit to enable hoses to be
tightened as part of routine maintenance.
Hoses with damaged metal braid should be replaced.
The Spearhead hydraulic system works at very high pressure. Use only genuine hoses, a
burst hose could be very dangerous.
Always replace hoses in exactly the same way they were removed, and to
avoid twisting during fitting use two spanners to slacken and tighten.
Always check the yellow protective sleeving is in good order, replacing sleeving is far cheaper
than replacing expensive hoses.
Hose warranty is limited to replacement of hoses due to faulty materials or manufacture.
Warranty will not be considered on hoses damaged by chaffing, abrasion, cuts or pinching
while in work, or to damaged threads due to over tightening.
BSP
(size)
Tightening
(Nm)
Torque
(lbs/ft)
1/4 “
24 18
3/8”
33 24
1/2”
44 35
3/4”
84 62
1”
115 85
BSP
(size)
Tightening
(Nm)
Torque
(lbs/ft)
1/4”
34 25
3/8”
75 55
1/2”
102 75
3/4”
183 135
1”
203 150
Warning
Hose is weakened when installed in twisted position. Also, pressure pulses in twisted hose tend to fatigue
wire and loosen fitting connections. Design so that machine motion produces bending rather than torsion.
Recommended torque settings for nut
security