Dyna Might Massey Fer­gu­son 7724 trac­tor

The Massey Fer­gu­son 7724 trac­tor with a re­designed front-axle sus­pen­sion and im­proved Dyna-VT trans­mis­sion gets put through its paces by our NZ-based tester Jaiden Drought

Farms & Farm Machinery - - Contents -

Ad­mit­tedly, there are not huge fun­da­men­tal changes to the Massey 7700 se­ries from the 7600 in terms of the way the trac­tors look. How­ever, there are some main points worth men­tion­ing.

There’s a re­designed front-axle sus­pen­sion; dot ma­trix (main trac­tor ad­just­ment on the dash) has been made much eas­ier to nav­i­gate around; it boasts a Stage IV Fi­nal en­gine; and there are three trans­mis­sion op­tions – Dyna-4 (7714 only), Dyna-6 (7715/7726) or the Dyna-VT (CVT/7715/7724). Dyna-VT now ben­e­fits from the ‘boost’ pre­vi­ously only avail­able in the Dyna-6 mod­els.

On top of this are three spec lev­els: Es­sen­tial, Ef­fi­cient and Ex­clu­sive. They will be brought into Aus­tralia un­der the Es­sen­tial and Ef­fi­cient specs.

ES­SEN­TIAL SPEC

This is the en­try-level spec, although it does still come with a ma­jor­ity of the com­forts of the larger mod­els, but is more aimed at the farmer market. You can still opt for the in­te­grated loader joy­stick (not arm­rest mounted), which has the for­ward re­verse shut­tle and gearshift on the joy­stick, as well as loader and third and fourth ser­vice con­trols.

Up to four me­chan­i­cal spool levers can be specced and come with 110L/min CCLS pump. Trans­mis­sion is still able to be op­er­ated from the four dif­fer­ent lo­ca­tions as the larger model, pro­vid­ing the loader joy­stick is specced.

EF­FI­CIENT SPEC

Ef­fi­cient is the medium-spec pack­age and is what our test

7724 trac­tor was equipped with. You can have ei­ther the Dyna-6 or Dyna-VT trans­mis­sions, a Com­mand Con­trol arm­rest with the in­te­grated joy­stick which con­trols two of the spools elec­tron­i­cally, and the choice of up to two more me­chan­i­cal or elec­tronic spool valves.

On a ma­chine of this size, where load­ers are not go­ing to be the norm, the arm­rest-mounted joy­stick is gen­er­ally used for front link­age con­trol (if fit­ted), which is ideal for mow­ing or si­lage stack work as hy­draulic con­trols, shut­tle and trans­mis­sion con­trols are all on the one lever. The slim dash is clearer than in the 7600 se­ries.

NEW SE­RIES

The 7600 se­ries trac­tors had the three spec lev­els. How­ever, for the new 7700 se­ries, all op­tions for the Ex­clu­sive spec are avail­able as an op­tion un­der the Ef­fi­cient spec.

This is the top-of-the-range op­tion for ei­ther Dyna-6 or

Dyna VT trac­tors, where you have two joy­sticks; one for the trans­mis­sion, which also has en­gine, PTO and head­land man­age­ment con­trols; and then a separate joy­stick for hy­draulic and trans­mis­sion con­trol.

The key dif­fer­ence is the Data­tronic 4 screen. Like most trac­tor mon­i­tors, this gives a snap­shot of ma­chine per­for­mance with the abil­ity to change, as­sign and mem­o­rise

spe­cific func­tions. This is con­sid­er­ably eas­ier and more user friendly than nav­i­gat­ing your way around the dot ma­trix.

EN­GINE

The 6.4-litre AGCO power (up to 7720) and the 7.4-litre AGCO power (7722-7726) en­gines use high-pres­sure com­mon rail with DOC and SCR af­ter-treat­ment to meet the Fi­nal Tier 4 reg­u­la­tions. The main thing to re­port on the 7700 range in the en­gine depart­ment is the in­clu­sion of EPM (boost) on the Dyna-VT mod­els.

I al­ways thought it was a lit­tle back­wards that the Dyna-6 trac­tors had it but the VT missed out, when it is com­mon per­cep­tion that a CVT trans­mis­sion will suck plenty of power.

Now the full 25hp is there when it is most needed, while the EPM mon­i­tors the load on the trans­mis­sion and PTO ac­cord­ing to for­ward speed, trans­mis­sion and PTO load.

TRANS­MIS­SION

The Dyna-6 is a well-proven, user-friendly trans­mis­sion which gives 24 speeds with six speeds in four ranges. There are two modes in the trans­mis­sion: speed match­ing and auto drive (there is not a me­chan­i­cal change between modes).

Speed match­ing is field mode, where it au­to­mat­i­cally changes the six gears in that range, but you then have to push an ad­di­tional but­ton to do a range change. Trans­port (or auto drive mode) op­er­ates like a full pow­er­shift and changes straight up from first gear in the first range right through the sixth gear in the fourth range. All you have to do is set the en­gine rev pa­ram­e­ters for when it changes and off you go. Other key fea­tures are:

• 40 or 50km/h trans­port speeds, eco fea­ture on 40km also avail­able

• Cruise con­trol speeds (C1/C2)

• Brake pedal to neu­tral fea­ture

• Re­verse shut­tle ag­gres­sive­ness ad­just­ment, separate ad­just­ment for for­ward and re­verse

• Ag­gres­sive­ness ad­just­ment for pow­er­shift ra­tios

There are a num­ber of nifty dif­fer­ent trans­mis­sion set­tings, although this does take some home­work.

All the au­toma­tion can be turned off, how­ever, and driven like any other nor­mal semi-pow­er­shift trans­mis­sion, which al­lows the best of both worlds.

IN THE CAB

I don’t mind what is now con­sid­ered the ‘old’ six-pil­lar de­sign, and it rarely ham­pers vis­i­bil­ity. In the seat, you’re sit­ting high over the top of the bon­net, which is great. But see­ing the draw­bar, even for some­one over six-foot tall, was a bat­tle.

A great idea is the one-piece poly­car­bon­ate wind­screen, which pro­tects against fly­ing stones. As one-piece wind­screens get larger, so do the bills to fix them.

The slim dash is clearer than in the 7600 se­ries, and with fuel and Ad­blue con­sump­tion – or en­gine and trans­mis­sion tem­per­a­ture, is def­i­nitely eas­ier.

Massey has also im­proved the dot ma­trix screen. It is slightly larger and, although it isn’t the eas­i­est to use com­pared to oth­ers on the market, it does give use­ful

in­for­ma­tion on trac­tor per­for­mance and in­di­vid­ual ad­just­ments for en­gine hy­draulics, etc.

The trans­mis­sion can be used from four dif­fer­ent lo­ca­tions in the cab: the left hand shut­tle; the arm­rest ‘T’ stick; the spool joy­stick; or the foot pedal when in auto mode.

There are also two places to change di­rec­tion – ei­ther the con­ven­tional left-hand shut­tle or on the joy­stick by plac­ing your foot on the clutch, push­ing the but­ton on the joy­stick un­til the di­rec­tion light shows up on the dash, and off you go.

There is also a de-clutch but­ton on the back of the joy­stick so you can feather the up­take if need be. The only gripe here is that you can’t shut­tle on the left, and then next time on the joy­stick you have to choose one and stick to it.

Com­fort was good with the new Quadlink front sus­pen­sion up­grade, which in­cludes two large rams rather than the rocker de­sign on the 7600 mod­els. There are two types of cab sus­pen­sion avail­able de­pend­ing on your per­sonal pref­er­ence. If I was to be crit­i­cal, I think the fourth step on the Massey is tucked too di­rectly un­der the third and can be a lit­tle awk­ward.

HY­DRAULICS

Our test ma­chine had the 150L/min CCLS pump (110 and 190L/min avail­able) con­trolled from four elec­tric rear spools, although between two and five rear are avail­able. The fin­ger­tip spools are re­ally easy to use. How­ever, for float, the lit­tle tab on the top must be pushed in, which doesn’t ex­cite me much.

The valve man­age­ment sys­tem al­lows ad­just­ment for high flow re­quire­ments, and an­other ad­di­tion is the pres­sure re­lease levers on the rear, which I am a big fan of. There are two types of cab sus­pen­sion avail­able de­pend­ing on your per­sonal pref­er­ence.

LINK­AGE AND PTO

With stan­dard four-speed PTO with 540/1000 and eco in both modes, the up­graded rear link­age now gives nearly 10 tonnes of lift ca­pac­ity. The whole back end is very well built and doesn’t clut­ter, al­low­ing for easy hitch­ing.

I didn’t like the top link holder on the 7600 se­ries, and it turns out it hasn’t been changed. The main nig­gle was it was at a bad height to hit your head on dur­ing hitch­ing.

The swiv­el­ling draw­bar is mounted between two huge chunks of metal that will han­dle the most de­mand­ing draw­bar tasks. The only com­plaint here is lim­ited vis­i­bil­ity from the cab.

SERVICEABILITY

Daily checks and all in­ter­val ser­vic­ing are car­ried out on the left­hand side of the ma­chine, with 500-hour en­gine and 1500-hour trans­mis­sion ser­vice in­ter­vals for our some­times dodgy fuel.

In­cluded is one ad­di­tional wa­ter sep­a­ra­tor, one pre-fil­ter and one main fuel fil­ter down to five mi­cron. En­gine oil can be checked with­out lift­ing the one-piece bon­net.

There are twin al­ter­na­tors and dou­ble bat­ter­ies and an au­to­matic iso­la­tor so, af­ter the ma­chine has been turned off for 30 sec­onds, it dis­con­nects the bat­tery.

THE BOT­TOM LINE

Per­son­ally, I think the Massey Fer­gu­son 7724 is a great-look­ing trac­tor. The big feet on the 7724 def­i­nitely make its pres­ence felt, build qual­ity is very good, and the new front sus­pen­sion makes for a com­fort­able ride.

The 7700 se­ries does ap­pear to be slightly more user friendly in the man­ner you can ac­cess this cus­tomi­sa­tion, par­tic­u­larly in the dot ma­trix – although some may still re­quire some bed­time read­ing to re­ally get the hang of it.

I re­ally like the 7.4-litre en­gine as the deep rum­ble from turn­ing it on means you au­to­mat­i­cally know there are plenty of ponies un­der the hood – good ponies.

42

The Massey Fer­gu­son 7700 se­ries looks sim­i­lar to the 7600, but there are plenty of up­grades un­der the hood

1: All con­trols are neatly ar­ranged 2: Lit­tle has changed from the

7600 se­ries

3: The dot ma­trix is much eas­ier to use on the 7700 than the 7600 se­ries trac­tors

4: The stan­dard arm­rest for the Ef­fi­cient spec trac­tors with in­te­grated joy­stick

5: The heavy-duty rear end on the Massey will cope with even the most de­mand­ing jobs

The re­vamped front-axle sus­pen­sion on the 7700 se­ries

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