VP TMK 300 User manual

User Guide
Tree shears_user guide_1.3_EN_29-06-22
Tree Shears
Videos showing the PW 350 and the
TMK 300 Tree Shears are available to
watch now on YouTube.
Important Notes
All site activity must be thoroughly planned before work commences to
identify hazards and assess risk.
These instructions form guidance for Tree Shears. Non-standard
applications should be approved by a suitably qualified engineer.
Ensure all personnel engaged in installation operations are properly briefed
and adequately supervised by a competent person.
THIS USER GUIDE IS NOT CONTROLLED WHEN PRINTED
IF IN ANY DOUBT SEEK FURTHER ADVICE:
ON FREEPHONE - 0800 111 4665
Rev Date Comments Initial
1.3 29/06/22 Branding update DSW

User Guide
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Common Symbols and Meanings
PERSONAL PROTECTIVE EQUIPMENT (PPE)
Use eye protection
Use hearing protection
Wear protective gloves
Wear head protection
Wear protective footwear
WARNING SYMBOLS
General warning
Crushing of hands
Hot surface or oil
Extreme cold
SAFETY
Safety Note: We recommend using hand and eye protection when operating hydraulic equipment

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Introduction
Model PW 350
Item Code STS.300
Excavator Class (t) 13 - 30
Service Weight (kg) 1400
A - Clamps Max Opening (mm) 1200 (Fig. 2)
B - Jaws Max Opening (mm) 600 (Fig. 2)
C - Cutting Force (ton) 25 (Fig. 2)
Height (mm) 1450
Max Cut Hard Wood (mm) 350
Max Cut Soft Wood (mm) 400
Oil Flow (l/min) 80 - 120
Excavator Operating Pressure (bar) 300
Equipment Specification
Equipment Identification
Tools to cut and handle trees and brush for timber harvesting using powerful shear cuts and heavy duty twin
clamps for safe and accurate handling. Tree Shears bunch, grip, cut and extract branches and trees
vertically without damaging the surrounding forestry, rail and land management.
TMK 300 (Fig.1)
PW 350 (Fig. 2)
Model TMK 300
Item Code STC.1
Excavator Class (t) 5 - 20
Weight Without Attachments (kg) 295
Length (mm) See Fig. 1
Width (mm) See Fig. 1
Height (mm) See Fig. 1
Max Cut Hard Wood (mm) 250
Max Cut Soft Wood (mm) 300
Oil Flow (l/min) 80 - 150
Excavator Operating Pressure (bar) 280
A
B
C

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Preliminary Checks
Tree Shears can be attached to any excavator that meets the necessary mechanical and hydraulic installation
requirements. Check the following points before installation:
 Tree Shears should only be mounted on an excavator with sufficient load capacity.
 Ensure the Tree Shear is compatible with the excavator’s hydraulic systems and hose connectors.
 Check the Tree Shear for any wear; including cracking or breakage. Contact Sandhurst if any such damage
is found.
Mounting Tree Shears to the Excavator’s Quick Hitch System
1. If a bucket is attached, remove from the Quick Hitch Coupler by following the relevant manufacturer’s
instructions.
2. Place the Dipper Arm to ground level and shut down the excavator prior to connecting the hydraulic
auxiliary pipes to the connectors.
3. Engage the coupler to the pins and curl/crowd the coupler
4. If using a fully automatic Quick Hitch, continue to fully curl/crowd the head. Switch to the ‘attach’ or ‘on’
position: the buzzer will cease. Hold the crowd lever for approximately 5 - 10 seconds to allow the hook to
fully engage and clamp. Note: For use of other types of Quick Hitch, refer to the relevant manufacturer’s
instructions.
Safety Note: Before operating the machine, the operator should exit the cab and, from a safe area,
perform a visual check to ensure the hook has fully engaged the pins.
Safety Notes:
The excavator driver should always be in full control of the Tree Shear mounting process.
All other operatives should remain clear of the excavator slewing area.
Always use clear recognised hand signals.
Connect the Hydraulic Lines
Safety Notes:
Extreme care and adequate precautions must be taken to prevent trapping fingers during
installation. Always use certified lifting equipment.
Improper installation can cause serious damage to the Tree Shear and to the excavator. If in
doubt, contact Sandhurst for assistance.
Dismounting/disconnecting Tree Shears is the reverse of that stated above
Ensure the excavator is set-up for ‘dual flow and rotation circuit’. Connect the shears IN hose to the excavator
pressure line. Connect the Shears OUT hose to the excavator return line. Make sure the stop valves are open.

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Pre-use Checks
When all installation works are completed, check the following before operating Tree Shears.
While moving the excavator’s bucket cylinder slowly in and out in the direction of ‘crowd’ and ‘dump', check:
 For any interference or obstruction between the Tree Shear and excavator;
 Whether the length of the connecting hoses are too short or too long;
 For any twisting, excessive bending or squeezing of the connecting hoses;
 The fixing status of the mounting pins.
While lifting the Tree Shear above the ground (no-loading condition), Check:
 Whether the Tree Shear runs normally without delay when in operation;
 For any oil leaks from hoses, fittings, hydraulic motor or motor control valve;
 For loosening of bolts or nuts;
 If any abnormal vibration or noise occurs while the Tree Shear is running.
Do Do Not
Read this user guide before operation
Wear appropriate safety equipment
Check for damage before every use
Ensure all hydraulic connections are tight and secure
Check the excavator’s quick hitch is compatible with the
Tree Shear
Ensure the excavator has sufficient load (tonnage)
capacity for the Tree Shear being used
Ensure the quick hitch connection is fully locked before
use
Provide additional support if necessary to prevent
overturning
Keep operatives outside of the excavator slewing zone
Store the Tree Shear on firm level ground when not in
use
Be aware of any buried services, e.g. gas pipes or
electric cables
Store the Tree Shear in a safe clean area when not in
use or when ready for collection
X Inadvertently ‘ground’ the Tree Shear
X Allow personnel into the working zone during operation
X Obscure the line-of-sight of the operator
X Interfere with the Tree Shear whilst in operation
X Drop or strike the Tree Shear
X Allow untrained personnel to operate the Tree Shear
X Operate if the Tree Shear is found to be damaged in any
way
XUse Tree Shears for anything other than their intended
use
X Use the Tree Shear if excess vibration or any abnormal
noise is detected
X Use the Tree Shear under water
X Undertake any maintenance on the Tree Shear - contact
Sandhurst
X Disconnect hydraulic lines under pressure (hydraulic oil
may be very hot)
Groundforce Training Services offer a wide range of courses primarily for those working in utilities, construction
and civil engineering. From short duration health and safety awareness to more complex or specialist safety
consultancy solutions.
Industry leading accredited safety training is delivered both on-site and through a nationwide network of training
centres.