Having started restoration work on his Hymac 580BT, Jeremy Rowland now looks at the next hurdles to get over as he begins to make progress
I managed to fit the steel hydraulic oil feed hose to the boom hoist rams that had been repaired and for which I had been waiting as I finished my last article on the restoration work, and also fitted the two new flexible hoses to the left-hand hoist ram.
During Andrew Beaulah’s July 2016 working event, Tony Flint attended and, having used the machine, he confirmed my suspicion that the hydraulic pumps had seen better days, although this did not surprise me I knew that the hydraulic pumps were the heart of the machine and they needed to be reconditioned.
Like most Hymac excavators, the 580BT utilises the triple in-line hydraulic gear pump system. There are two makes of hydraulic pumps used on these machines - Commercial Hydraulics and Hamworthy; my digger being fitted with the Commercial pumps. There were two advantages for me inasmuch as Tony Flint could both test and refurbish the pumps and new parts were still available off the shelf for the pumps, so one fine day in August I set about removing the digger’s triple inline hydraulic gear pumps.
Once again I asked for advice from Tony about removing the pumps, which turned out to be an easier job than I had expected. I unscrewed the bolts that secured the three hydraulic pick-up pipes at the rear of the pumps, slackened off the three hoses from the pumps to the oil filters and slackened off the hydraulic filter housing bolts to enable me to disconnect the pipes from the pumps to the filters. That just left the four mounting bolts, which came out without any issues. I did place some wood underneath the pumps to give them some support once the mounting bolts were removed as I did not want to put undue strain on the engine-to pumps drive shaft.
هذه القصة مأخوذة من طبعة October 2017 من Classic Plant & Machinery.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة October 2017 من Classic Plant & Machinery.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
HYMAC 580BT Restoration
Having started restoration work on his Hymac 580BT, Jeremy Rowland now looks at the next hurdles to get over as he begins to make progress
The Bigger The Better
The Ariño coal mine is not only one of largest operations in Spain today, but also relies on the services of some of the country’s largest earthmovers, writes Steven Vale
Men At Work!
The MF Hanomag dozer ripping up the earth; the Hanomag company dates back to 1835, building steam engines from which it progressed to making many other types of machinery. The construction division was sold to Massey Fergusson in 1974 and was taken over by the IBH Group in 1980: after the collapse of IBH it became part of Komatsu
Into A New Era Ian Gibson Earthmoving Into A New Era
PETER LOVE visited his good mate Ian Gibson Plant Contractor to see his excellent new premises near Upminster, Essex, and his superbly presented working equipment
GFX gets the works
Martyn Williams completes the story of his restoration of an Aveling Barford G series FX roller
Viva Las Cruces
Coal is important for Spain’s economy, but it is not the country’s only indigenous raw material.
This Was The Place To Be
If you were looking to buy some plant at auction, you couldn’t do better than check out the Euro Auction Sale, held near Selby on January 25, 26 and 27.
Inching back to life
Chris McCullough finds an extremely rare excavator restoration
Eiger Replaces Andes
Tom Pattle, owner of P&S Marine, tells the tale of moving an Eiger to his yard to replace a faithful Andes
Crawlers Star!
Although they are not seen in a plant background, enjoying classic and vintage crawlers, the backbone of the plant working scenario these days, is mostly seen at agricultural events like the National Crawler Championship. It was part of the National Ploughing Championships, which took place on Sunday October 15 near Bishops Lydeard, Somerset, and was well supported by CPM readers. The editor was there to see it happen
