Mechanical Mounting; Hydraulic Mounting; Maintenance; General - VAHVA C Series Operating And Safety Manual

Mechanical mounting

1. Make sure that the mounting surface of the rotator on the frame is clean, straight and free of
paint.
2. Install the rotator on the grapple frame. The tightening torque is 300 Nm.
- Use M16 12.9 bolts for installation
3. Grease the bearings.
4. Retighten the screws after the first week of work.

Hydraulic mounting

1. Connect the hoses between the rotator and the hydraulic cylinder. Rotator markings:
O = open, at the cylinder rod end, and C = closed, at the opposite end.
2. The cylinder connections, see chapter 9, dimension the hose size according to the output of
the base machine.
3. Test the connection.
If necessary, use a protective spiral wrap on the hydraulic hoses.
If the grapple is mounted on a cargo crane or an excavator boom, used to load cargo, the cylinder
must be fitted with a double lock valve or a relief valve (hose break valve). The valve is piped to
the cylinder.
The maximum operating pressure for the grapple is 250 bar. If necessary, a pressure relief valve
must be installed.

6 Maintenance

General

It is advisable to have any adjustments and repairs that require the use of special tools and
expertise to be performed by qualified specialists of Koneosapalvelu or your grapple dealer. Only
use original spare parts for grapple maintenance.
C / E / KC
10
Versio 1.6.2020 (English)
10