Twose TF5500, Руководство по эксплуатации

Страница: 47 / 52

38
HYDRAULIC HOSES
The condition of all hoses should be carefully checked during routine service of the
machine. Hoses that have been chaffed or damaged on their outer casing should be
securely wrapped with waterproof adhesive tape to stop the metal braid from rusting.
Hoses that have suffered damage to the metal braid should be changed at the earliest
opportunity.
Hose Replacement
Before changing any hoses take the time to study the existing installation as the routing
has been carefully calculated to prevent hose damage during operation - always replace
hoses in exactly the same location and manner. This is especially important for the flail
hoses where they must be crossed, upper to lower, at the dipper and head pivots.

Always replace one hose at a time to avoid the risk of wrong connections.

When the hose is screwed to an additional fitting or union, use a second spanner on the
union to avoid breaking both seals.

Do not use jointing compound on the threads.

Avoid twisting the hose. Adjust the hose line to ensure freedom from rubbing or
trapping before tightening hose end connections.
All Hydraulic Hoses (BSP) fitted to Twose Hedgecutters have ‘soft seal’ connections on
both flail and ram circuit hoses.
Recommended torque settings for nut security are as follows:
For hose unions (BSP) fitted in conjunction with bonded seals the recommended torque
settings are as follows:
Safety Note:
Soft seal hose connections are capable of holding pressure when the nut is only ‘finger
tight’. It is therefore recommended during dismantling that the hose be manually flexed to
relieve any residual pressure with the retaining nut slackened prior to complete
disassembly.
SIZE TORQUE SETTING O Ring Ref.
1/4” BSP
= 24 Nm or 18 lb.ft. 10 000 01
3/8” BSP
= 33 Nm or
24 lb.ft.
10 000 02
1/2” BSP
= 44 Nm or 35 lb.ft. 10 000 03
5/8“ BSP
= 58 Nm or
43 lb.ft.
10 000 04
3/4“ BSP
= 84 Nm or 62 lb.ft. 10 000 05
1” BSP
= 115 Nm or
85 lb.ft.
10 000 06
SIZE TORQUE SETTING
1/4” BSP
= 34 Nm or 25 lb.ft.
3/8” BSP
= 75 Nm or
55 lb.ft.
1/
2” BSP
= 102 Nm or 75 lb.ft.
5/8“ BSP
= 122 Nm or
90 lb.ft.
3/4“ BSP
= 183 Nm or 135 lb.ft.
1” BSP
= 203 Nm or
150 lb.ft.