Tefra Quick Hitch - RD Williams
Tefra Quick Hitch Quick Hitch Safety Redefined
RD Williams & Hill Engineering have come together to offer the Australian market a fully automatic dual positive lock hydraulic quick hitch. The TEFRA quick hitch offers the following features & benefits: Dual Locking – Tefra Locks both Front and Rear Attachment Pins, which ensures compliance with Australian worksite regulations. Simplicity – Tefra has only three moving parts, the fewest of any double locking coupler. Smart Valve – Hill Smart Valve ensures the attachment is in a safe position before the release sequence is permitted.
Permitted Release Zone. The Smart Valve will allow oil to flow into the cylinder so that the release procedure can commence. No Release Zone. The Smart Valve will stop oil from flowing into the cylinder, thereby preventing the release procedure.
Single Cylinder Design – totally enclosed piston rod, no external pipes, eliminating the risk of damage. Failure Indicator – a failure condition allows limited movement of the attachment upon the coupler indicating a problem. Variations in Pin Centres / Multi Pin Pickup – ability to pick up attachments with different pin centres.
Phone 07 3715 0800
RD Williams Excavator Parts ABN 78 011 015 624
Head Office: Tel/Fax: Email: [email protected] 29C Dunn Road Tel: +61 (0)7 3715 0800 Web: www.rdw.com.au Rocklea QLD 4106 Fax: +61 (0)7 3715 0899
Frequently Asked Questions Meets AS4772-2008 Standard?
Yes.
Compliant to future Standards?
Yes. Independent Government testing has passed the Tefra design to meet or exceed the proposed International ISO standard.
Automatically locked into position?
Yes. Front hook closes first, then rear hook. Pins will be held firmly, even with slight variance in bucket pin centres.
Visible Positive Indication?
Yes. Orange Tongues are clearly visible from operator position when attaching bucket, and Hooks fully enclose the pins.
Dual Lock Design?
Yes. If the hydraulics fail, both pins remain locked into position. The bucket can not swing on one pin.
Mechanical & Positive Safety System?
Yes, see Safety Locking Mechanisms below.
Multiple Safety Locking Mechanisms?
1. Primary is Hydraulic activation 2. Secondary is hook shape, where the geometry of the pick up forces the hooks to stay closed.
What happens if hydraulics fail?
In an event of the hydraulics failing, the bucket stays on both pins through the safety systems, however the bucket will have some movement on the pins to provide indication of failure to the operator.
Does it Fail to Safe?
Yes, the Hitch reverts to closed position, retaining the Attachment.
Detach Sequence?
Yes. The Smart Valve system does not allow the bucket to be detached unless in the fully crowded in position.
“Smart Valve”?
Yes. A Smart Valve is a simple float device that prevents Hydraulic oil from flowing to the cylinder unless the hitch is in the fully crowded in position.
Can the bucket become detached whilst digging?
No. The operator must intentionally go through the release sequence within the permitted release zone.
RD Williams Excavator Parts ABN 78 011 015 624
Head Office: Tel/Fax: Email: [email protected] 29C Dunn Road Tel: +61 (0)7 3715 0800 Web: www.rdw.com.au Rocklea QLD 4106 Fax: +61 (0)7 3715 0899
RD Williams & Hill Engineering have come together to offer the Australian market a fully automatic dual positive lock hydraulic quick hitch. The TEFRA quick hitch offers the following features & benefits: Dual Locking – Tefra Locks both Front and Rear Attachment Pins, which ensures compliance with Australian worksite regulations. Simplicity – Tefra has only three moving parts, the fewest of any double locking coupler. Smart Valve – Hill Smart Valve ensures the attachment is in a safe position before the release sequence is permitted.
Permitted Release Zone. The Smart Valve will allow oil to flow into the cylinder so that the release procedure can commence. No Release Zone. The Smart Valve will stop oil from flowing into the cylinder, thereby preventing the release procedure.
Single Cylinder Design – totally enclosed piston rod, no external pipes, eliminating the risk of damage. Failure Indicator – a failure condition allows limited movement of the attachment upon the coupler indicating a problem. Variations in Pin Centres / Multi Pin Pickup – ability to pick up attachments with different pin centres.
Phone 07 3715 0800
RD Williams Excavator Parts ABN 78 011 015 624
Head Office: Tel/Fax: Email: [email protected] 29C Dunn Road Tel: +61 (0)7 3715 0800 Web: www.rdw.com.au Rocklea QLD 4106 Fax: +61 (0)7 3715 0899
Frequently Asked Questions Meets AS4772-2008 Standard?
Yes.
Compliant to future Standards?
Yes. Independent Government testing has passed the Tefra design to meet or exceed the proposed International ISO standard.
Automatically locked into position?
Yes. Front hook closes first, then rear hook. Pins will be held firmly, even with slight variance in bucket pin centres.
Visible Positive Indication?
Yes. Orange Tongues are clearly visible from operator position when attaching bucket, and Hooks fully enclose the pins.
Dual Lock Design?
Yes. If the hydraulics fail, both pins remain locked into position. The bucket can not swing on one pin.
Mechanical & Positive Safety System?
Yes, see Safety Locking Mechanisms below.
Multiple Safety Locking Mechanisms?
1. Primary is Hydraulic activation 2. Secondary is hook shape, where the geometry of the pick up forces the hooks to stay closed.
What happens if hydraulics fail?
In an event of the hydraulics failing, the bucket stays on both pins through the safety systems, however the bucket will have some movement on the pins to provide indication of failure to the operator.
Does it Fail to Safe?
Yes, the Hitch reverts to closed position, retaining the Attachment.
Detach Sequence?
Yes. The Smart Valve system does not allow the bucket to be detached unless in the fully crowded in position.
“Smart Valve”?
Yes. A Smart Valve is a simple float device that prevents Hydraulic oil from flowing to the cylinder unless the hitch is in the fully crowded in position.
Can the bucket become detached whilst digging?
No. The operator must intentionally go through the release sequence within the permitted release zone.
RD Williams Excavator Parts ABN 78 011 015 624
Head Office: Tel/Fax: Email: [email protected] 29C Dunn Road Tel: +61 (0)7 3715 0800 Web: www.rdw.com.au Rocklea QLD 4106 Fax: +61 (0)7 3715 0899
